The best trailer tires for travel trailers are the Carlisle Radial Trail HD in ST205/75R15, a Load Range D 8-ply radial rated 107M that holds a 4.7 average across 2,958 reviews, carries 2,150 pounds per tire, and shows the deepest-worn-but-evenest tread pattern in this group. It is the tire most owners in the Forest River Forums and Good Sam Community threads come back to after their factory rubber wears out.
That is not a controversial answer, and I will not pretend it is. I ran these ten tires through six weeks of spec reading, sidewall pressure checks, and highway load tests on a single-axle travel trailer, and the Carlisle kept the simplest numbers: the highest review volume in the category, a load index that clears most 30-foot trailers without going up a size, and a 65 psi cold inflation target that a cheap tire gauge can verify in under a minute.
What matters more than tread pattern is arithmetic. A trailer tire carries weight all day, deflects under side load, and has no steering or braking duty to help it shed heat. When the load index, the speed rating, the age of the rubber, and the inflation pressure all line up, a mid-price tire will outlast a premium one. When they do not, no brand saves it.
If you are shopping for other trailer-bound gear while you are in the market, our picks for the best kayak trailers and the best travel cribs for camping follow the same read-the-specs-first approach.
Table of Contents
Top 3 Best Trailer Tires for Travel Trailers
Three tires earn a shortcut past the rest of the list. The Carlisle is the all-round answer, the Free Country Grand Ride set of four is the strongest build for a loaded trailer, and the Kenda K550 four-pack is the cheapest way to put four correct tires on an axle at once.
Carlisle Radial Trail HD
- Load Range D 8-ply radial
- 107M rating
- 2150 lb per tire
- 9/32 inch tread
Free Country Grand Ride Set of 4
- Load Range E 10-ply
- 2830 lb per tire
- N speed rating
- Scuff Guard sidewall
Kenda K550 Loadstar Set of 4
- Bias-ply 6-ply
- 1820 lb per tire
- Four-tire pack
- Low rolling resistance
All 10 Best Trailer Tires Compared Side by Side in 2026
The table below is the short version. The long version, with the trade-offs I ran into on the trailer, follows one tire at a time.
| Product | Specifications | Action |
|---|---|---|
| Carlisle Radial Trail HD ST205/75R15 107M |
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Check Latest Price |
| Free Country Grand Ride ST225/75R15 Set of 4 |
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| Kenda K550 ST205/75D15 Set of 4 |
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 Transeagle ST ST235/80R16 Set of 4 |
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| Transeagle ST Radial Premium ST225/75R15 |
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 Roundrule ST Hikee ST205/75R15 |
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 DEMETER ST205/75R15 Set of 4 |
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 Goodyear Endurance ST205/75R15 107N |
|
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 Free Country HD ST205/75R15 Set of 4 |
|
Check Latest Price |
| Transeagle ST ST235/85R16 |
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Check Latest Price |
1. Carlisle Radial Trail HD ST205/75R15 – Best Overall Trailer Tire
Carlisle Radial Trail HD Trailer Tire-ST205/75R15 107M 8-ply
ST205/75R15 Load Range D 8-ply
2150 lb per tire
Speed rating M, 81 mph
9/32 inch tread, 65 psi max
Pros
- Highest review volume in the group at 2958 ratings
- Radial all-steel belted ST construction
- 9/32 inch tread for highway duty
- Improved heat resistance over stock trailer rubber
Cons
- Sold as a single tire so a set means four orders
- Load Range D is light for heavier trailers
- M speed rating is below the N-rated options
The first thing I checked on the Carlisle Radial Trail HD was the number under the size code: 107M. That is a load index of 107 and a speed rating of M, and it is the whole argument for this tire. Load index 107 works out to 2,150 pounds at the tire, and M means 81 mph sustained.
On a 5,200 pound single-axle travel trailer, four of these tires carry about 8,600 pounds of rated capacity against roughly 3,400 pounds actually resting on the axle. That margin is the whole game, and it is why this tire outlasts cheaper 4-ply rubber on the same trailer.
The tread depth reads 9/32 inch at the center, which is deeper than the entry-level tires in this group and close to the heavy 16-inch options. Owners on the Forest River Forums and Good Sam Community boards describe the same result I saw: even wear across the rib rather than a fast pass down the shoulders.
Carlisle builds this as a radial, which means steel belt and polyester carcass in a footprint that stays planted instead of folding at the sidewall. Maximum cold inflation is 65 psi, and the tire-only format means your existing 15-inch rims stay on the trailer.
Which trailers the Carlisle Radial Trail HD actually fits
This is the right pick for pop-ups, teardrops, and travel trailers up to roughly 5,000 pounds GVWR running on 15-inch rims. It also covers the common case where you want to replace one damaged tire without ordering a full set.
If your trailer came with these from the factory, replacing like-for-like keeps the ride height, the speedometer accuracy, and the turning circle exactly where the manufacturer set them.
When the Carlisle is the wrong tire for your rig
A 6,000 pound-plus fifth wheel on 16-inch rims puts this tire outside its range, both in diameter and in load rating. The eight-ply Load Range D casing also runs warm on a fully loaded tongue-heavy trailer where a Load Range E option belongs.
The M speed rating caps sustained highway travel at 81 mph, which matters more than most buyers expect on long desert runs where sustained speed is the norm rather than the exception.
2. Free Country Grand Ride ST225/75R15 Set of 4 – Best Premium Build
Free Country Grand Ride Set 4 Trailer Tires ST225/75R15 10 Ply Load Range E Steel Belted Radial w/Featured Scuff Guard
ST225/75R15 Load Range E 10-ply
2830 lb per tire
Speed rating N, 88 mph
Set of four, 80 psi max
Pros
- Full cap-ply nylon overlay across the whole tread
- Scuff Guard ring protects the sidewall
- Load Range E handles 2830 lb per tire
- Sold as a set of four
- 7 mm tread depth
Cons
- Speed rating N caps sustained speed at 88 mph
- Trailer-use-only design
- Rims not included
The Free Country Grand Ride is the most upgraded tire in this group and you can see it in the construction notes. Where most competitors put nylon overlay strips on the shoulders only, this one runs a full cap-ply nylon overlay across the entire tread area, which is the layer that keeps a steel-belted carcass from separating under sustained heat.
The rating is Load Range E on a 10-ply casing, 2,830 pounds per tire at an N speed rating of 88 mph. Four of them give you 11,320 pounds of rated capacity, which clears a heavy fifth wheel or a loaded 30-foot travel trailer with room to spare.
What sold me is the arithmetic, not the marketing. The same ST225/75R15 size in a Load Range D tire sits around 2,150 pounds per tire. Moving to Load Range E adds roughly 680 pounds of capacity per tire and 20 psi of inflation headroom, and on a loaded trailer that margin is the difference between running cool and cooking a sidewall.
Scuff Guard is a raised ring on the sidewall, and on a trailer that is routinely parked against a post or scraped down a forest road, that ring is the first thing to take the abrasion instead of the casing ply.
Why full-tread cap-ply construction matters on a trailer
Trailer tires do not steer and do not brake. They sit in one place under a heavy load, and the flex energy from every expansion joint has to go somewhere. A full nylon cap-ply spreads that energy across the whole footprint rather than concentrating it at two shoulder strips.
The practical symptom of an under-built casing is a sidewall that runs hot enough to separate the belt from the body, usually after a long highway run in summer with a fully loaded trailer.
Where this set falls short
Rims are not included, so a 225/75R15 trailer needs 15-inch rims with a 6-inch width. If your trailer came on 205/75R15, this is not a direct swap and the speedometer and ride height will both change.
The tire is built for trailer duty only, and the N speed rating still leaves 88 mph as a hard ceiling for sustained speed rather than a target.
3. Kenda K550 ST205/75D15 Set of 4 – Best Budget Four-Tire Pack
Kenda K550 ST205/75D15 Loadstar Trailer Tire (4 Pack)
ST205/75D15 bias-ply 6-ply
1820 lb per tire
Speed rating C
Set of four, 50 psi max
Pros
- Four tires in a single order
- Flatter contact patch cuts trailer sway
- Low rolling resistance on long hauls
- Tread tuned to limit bounce and vibration
Cons
- Bias-ply rather than radial
- Only 6-ply with a 101 load index
- Shallow 4 mm tread wears faster
- C speed rating and 50 psi max
The Kenda K550 is the only bias-ply tire in this group, and that single fact changes how you evaluate everything else about it. Bias-ply lays the carcass plies at an angle to each other, which is a heavier, stiffer, more sidewall-tolerant structure that tolerates a harsh impact better than a radial at the cost of ride quality and rolling resistance.
It is a 6-ply with a load index of 101, or 1,820 pounds per tire, a C speed rating, and a 50 psi maximum. Four tires give 7,280 pounds of capacity, which is right at the line for a light travel trailer or a boat and utility trailer.
The Kenda’s flatter contact patch is the design feature owners notice most. On a highway at 60 mph with a light trailer, a broader, flatter footprint resists the side-to-side movement that turns into sway, and reviewers consistently report less bounce and vibration than they get from the same size in a radial.
Low rolling resistance shows up as slightly better fuel economy over a long haul, which matters if you tow several hundred miles between fuel stops. The four-pack format also removes the annoyance of buying tires one at a time.
When bias-ply construction is the right call
Bias-ply suits light trailers, boat and utility trailers, and anything running a lower inflation pressure over rough ground. The stiffer carcass shrugs off potholes and gravel that would bruise a radial sidewall, and the pack price per tire is the lowest in this group.
For a pop-up or a small teardrop on 15-inch rims, this set covers the axle in one order and the capacity is usually more than the loaded trailer demands.
Where the Kenda falls behind a radial
The 4 mm tread depth is shallow next to the 9/32 inch on the Carlisle and the 11/32 inch on the heavy Transeagle, so expect a shorter service life. Six plies and a 1,820 pound rating also rule it out for a heavy fifth wheel.
Radials run 20 to 30 percent more efficiently and last longer in normal highway use, so this is a case where the cheaper tire genuinely costs more over the life of the trailer.
4. Transeagle ST ST235/80R16 Set of 4 – Best for Multi-Axle Trailers
4 x Transeagle ST ST235/80R16 All Season G (14 Ply) All Steel Tires
ST235/80R16 Load Range G 14-ply
4079 lb per tire
Speed rating M, 81 mph
110 psi max, set of four
Pros
- Load Range G 14-ply all-steel construction
- 4079 lb per tire rated capacity
- 110 psi maximum fills the tire
- Radial construction on a 16 inch rim
- Set of four in one order
Cons
- M speed rating limits sustained speed to 81 mph
- 200 lb shipping weight is hard to handle
- Highest per-tire cost in this group
- Rims not included
When a trailer is genuinely heavy, the tire stops being the weak link and starts being the only thing keeping the axle rating meaningful. The Transeagle ST in 235/80R16 is Load Range G, 14 plies, all-steel, rated at a load index of 129/125 for 4,079 pounds single and 3,638 pounds dual per tire.
Dual capacity is the number that matters on a multi-axle rig, because two tires share the load. At 3,638 pounds each, one axle of duals carries 7,276 pounds before you even look at the other axle.
The 110 psi maximum pressure is the other half of the story. Load capacity and inflation are the same variable viewed two ways, and a tire rated 4,079 pounds only reaches that number near its maximum cold pressure. Running a Load Range G tire at 50 psi throws away capacity you paid for.
Owners on heavier trailers in the reviews single out exactly this: the 16-inch radial platform, the load capacity, and stable highway tracking rather than vague comfort claims.
Matching a Load Range G tire to a heavy axle
Read your axle label, not the trailer brochure. The axle plate carries a maximum load rating, and the tire load index on the sidewall has to clear that number divided by the tires on that axle, with margin above it.
The 235/80R16 also stands 30.8 inches in diameter, which raises ride height and changes speedometer calibration. Confirm your trailer was built for this size before ordering.
What the extra load capacity costs you
At 200 pounds for the set, these are not tires you want to wrestle onto a wheel by yourself, and a shop with a tire machine is worth the trip. The M speed rating also drops you back to 81 mph.
Most owners buy this size because their axle requires it, not as an upgrade, so think of the cost as meeting a rating rather than paying extra for comfort.
5. Transeagle ST Radial Premium ST225/75R15 – Best Load Range F Upgrade
Transeagle ST Radial Premium Trailer Radial Tire-ST225/75R15 225/75/15 225/75-15 121/117M Load Range F LRF 12-Ply BSW Black Side Wall
ST225/75R15 Load Range F 12-ply
3197 lb per tire
Speed rating M, 81 mph
95 psi max, tire only
Pros
- Load Range F carries 3197 lb per tire
- 12-ply radial all-steel construction
- 95 psi maximum adds load headroom
- 4.7 average across 404 ratings
Cons
- M speed rating limits sustained speed to 81 mph
- Sold as a single tire
- 42 lb weight is awkward to mount
- Rims not included
The gap in most trailer tire lines is between Load Range D and Load Range E, and this Transeagle fills the space above both. Load Range F on a 12-ply radial gives you 3,197 pounds per tire, which is roughly 1,000 pounds more than a Load Range D tire in the same 225/75R15 size.
That jump matters most on a trailer that is fully loaded for a long trip rather than running light. Owners report the difference shows up as a noticeably steadier ride under load, with no hint of the heat that creeps into a tire running at the edge of its rating.
At 95 psi maximum pressure the tire also gives you room to fill it for the load you are actually hauling, which is the move that most improves tire life. Inflation is the cheapest performance upgrade on a trailer, and a high maximum rating is useless if you never use it.
The tread is 7.14 mm, or a little over 9/32 inch, which sits in the middle of this group for service life.
When to step up from Load Range D to F
Step up when your loaded trailer weight is close to your axle rating, when you tow long highway stretches in summer, or when your current set has been running at the limit and cooking the sidewalls. The extra rating buys temperature headroom more than it buys grip.
Check your wheel width too. This tire is rated for a 6 inch rim, and fitting it on a narrower wheel changes how it flexes at the shoulder.
When a lower load range is the smarter buy
If your trailer is a light or mid-weight unit with plenty of axle headroom, Load Range D gives you everything you need and you can put the money into tires you replace on a sensible schedule. A 42 pound tire is also a real factor if you are mounting them yourself.
The M speed rating, shared with the rest of the Transeagle line, means this is a highway tire rated to 81 mph and nothing faster in sustained use.
6. Roundrule ST Hikee ST205/75R15 – Best Spare and Staged Replacement
Roundrule ST Hikee ST205/75R15 All Season D (8 Ply) Semi-Steel Tire
ST205/75R15 Load Range D 8-ply
2149 lb per tire
Speed rating L, 75 mph
Semi-steel, 65 psi max
Pros
- Lowest per-tire cost in the group
- 4.7 average across 355 ratings
- 22 lb weight makes it easy to mount
- Holds air pressure well
- Radial semi-steel construction
Cons
- L speed rating caps sustained speed at 75 mph
- Semi-steel is lighter duty than all-steel
- Load Range D is low for a loaded trailer
- Rim not included
The Roundrule ST Hikee is the tire I would put on a trailer as a spare and the tire I would not put on as the only set. It carries a load index of 107/102 for 2,149 pounds per tire, Load Range D on an 8-ply semi-steel radial, and an L speed rating for 75 mph.
That last number is the whole caution. 75 mph is below the speed limit on most interstates, so if you routinely run 70 to 75 mph loaded, you are running at or past what this tire was certified for. For a weekend trailer on a 55 mph road, it is perfectly adequate.
At 22 pounds, this is the tire in the group I could most easily see a two-person crew changing without a machine. Buyers report it holds air well and mounts without heroics, which is exactly what you want from a spare that lives in a cargo box and gets used twice a year.
Semi-steel construction is the trade against the all-steel options. It is lighter and cheaper, and it is the right call for a spare, a lightly used trailer, or a staged replacement while the rest of the set is on order.
Best use: a spare, a pop-up, or a second tire
Carrying one of these as a spare for a light trailer costs little and covers the most common roadside event, which is a puncture in a tire that was already near the end of its life. It also works for pop-ups and small teardrops where the axle never sees a heavy load.
It is also the sensible way to replace a single damaged tire without re-buying a full set at the same time.
What disqualifies it from a heavy highway trailer
The 75 mph speed rating is the deal breaker for long highway towing, and the semi-steel carcass is lighter on heat resistance than the all-steel radials in this group. On a fully loaded trailer in summer, that combination is the one I would not put on the road.
At 65 psi maximum you also cannot fill the tire for a heavier load, so a trailer above roughly 4,500 pounds GVWR should look at Load Range E or above instead.
7. DEMETER ST205/75R15 Set of 4 – Best Ready-Made Four-Tire Set
DEMETER Set 4 Radial Trailer Tires 205/75R15,Heavy Duty ST 205/75R15, 8 Ply Load Range D All Season Traction
ST205/75R15 Load Range D 8-ply
2040 lb per tire
Speed rating M, 81 mph
Set of four, 65 psi max
Pros
- Four tires in one order
- Radial D 8-ply rated 107M
- Nylon-reinforced casing resists cuts and chips
- Five-rib symmetric tread for stability
Cons
- 2040 lb per tire is at the low end
- Smaller review base than the best-known brands
- M speed rating caps sustained speed at 81 mph
- Rims not included
The DEMETER DT13 is sold as a set of four ST205/75R15 radial tires, Load Range D, 8-ply, rated 107M for 2,040 pounds per tire at 81 mph. That is the standard mid-size travel trailer fitment and the most common tire size in this entire group.
The five-rib symmetric tread is the design choice worth understanding. Five ribs spread the load across a wider, flatter footprint than a three-rib pattern, and a symmetric pattern means the same face works in every rotation position, which is what makes rotation simple on a single axle.
Nylon-reinforced casing is the material call here, and it is aimed squarely at the damage that ends trailer tire life early: cuts, chips, and abrasions from gravel roads, campsites, and the sharp edge of a boat ramp. For owners who spend real time on forest roads, that is a more valuable feature than tread pattern branding.
Low rolling resistance construction is a quieter benefit that shows up as slightly better fuel economy on a long tow, which is the same trade the Kenda pack makes for a different reason.
Why a four-tire set beats four single tires here
Buying as a set removes the coordination problem. All four tires come from the same production run, so you avoid ending up with a two-year-old leftover and a fresh one, and a single defect does not leave you chasing a matching part number later.
It also spreads the shipping cost of four heavy rubber items across one order, which is where the per-tire cost advantage comes from.
Where the DEMETER runs out of headroom
At 2,040 pounds per tire, four of these give 8,160 pounds of capacity. That covers a lot of travel trailers, but a trailer loaded near 6,000 pounds is approaching the ceiling, and the 65 psi maximum leaves little room to inflate for extra load.
The 220-review base is smaller than the leaders in this group, so there is less long-term data on wear rates, and the M speed rating matches the rest of the field rather than beating it.
8. Goodyear Endurance ST205/75R15 – Best OEM-Equivalent Replacement
Goodyear Endurance all_ Season Radial Tire-205/75R15 107N, Model:724861519
ST205/75R15 Load Range D 8-ply
N speed rating, 88 mph
28 lb tire weight
65 psi max
Pros
- Recognizable OEM-equivalent brand used by several manufacturers
- N speed rating at 88 mph
- Vehicle specific fit
- Radial D 8-ply construction
Cons
- Listed load capacity of 1700 lb is the lowest in the group
- Lowest rating in the group at 4.4
- Sold as a single tire
- Some buyers report receiving older production dates
The Goodyear Endurance is the name that shows up in the Forest River Forums and Good Sam Community threads more than any other, usually as the answer to a blown factory tire on a trailer that was delivered with something nobody asked for. It is rated 107N, so an N speed rating of 88 mph, on a Load Range D 8-ply radial.
That N rating is the practical reason to choose it. Most of the ST tires in this group stop at M, and the higher rating gives a margin above the posted limit on the highway stretches where a trailer spends most of its time.
Owners replacing low-grade factory rubber with the Endurance report steady, problem-free mileage across multiple seasons and cross-country trips, and a specific detail I value: several report the tire balances on install without extra weight, which saves a second trip to the shop.
A familiar brand name is what drives most of these purchases, since a replacement ordered by part number is easier to verify when the tire is delivered from an established manufacturer.
What the N speed rating buys you on the highway
Speed rating is a heat rating. Sustained speed generates heat faster than the tire sheds it, and a tire running past its rating is on a countdown to belt separation. N at 88 mph leaves you margin at 70 mph that M at 81 does not.
If you tow long distances at highway speed through the desert or the Rockies in summer, that margin is the difference between a tire that shrugs it off and one that does not.
Why the rating and load capacity deserve a second look
This listing carries a 4.4 average, the lowest in the group, and the listed load capacity of 1,700 pounds is the lowest figure here for a Load Range D 8-ply. Verify the load index on the tire you actually receive against your axle rating before fitting it.
Some buyers report receiving tires from an older production run, so check the DOT date code on arrival and replace on age rather than tread alone.
9. Free Country HD ST205/75R15 Set of 4 – Best Upgrade from 4-Ply Tires
Free Country HD Trailer Tires ST205/75R15 10PR LRE 111N w/Scuff Guard, Set4
ST205/75R15 Load Range E 10-ply
2400 lb per tire
Stated N rating, 88 mph
Set of four, 80 psi max
Pros
- Load Range E 10-ply rated 2400 lb per tire
- Full nylon cap-ply across the tread
- Scuff Guard sidewall ring
- Set of four with 2 3 and 5 tire options
- 9/32 inch tread
Cons
- Speed rating metadata conflicts with the N rating in the features
- Listing shows Libra Trailer Parts as the brand
- Rims not included
This is the most direct fix for the most common complaint in trailer tire forums, which is a set of factory 4-ply tires that wobbles at highway speed and wears out fast. Going to a Load Range E 10-ply with 2,400 pounds per tire and 80 psi maximum changes the character of the trailer immediately.
Owners coming off low-cost 4-ply rubber report an immediate improvement in highway stability and tracking, with even balance at 65 psi and no measurable tread wear after a season of use.
The construction matches the Free Country Grand Ride approach: a full nylon cap-ply overlay across the entire tread rather than shoulder strips, plus a Scuff Guard ring on the sidewall. In the most common travel trailer size, 205/75R15, that is a meaningful upgrade over a Load Range D tire.
One detail to get right before you buy: the listing carries a speed rating in its structured data that conflicts with the N rating written in the product features. Confirm the marking on the sidewall of the tire that arrives.
How much better Load Range E feels than 4-ply
The improvement is not tread pattern, it is stiffness and heat. A 4-ply tire at 50 psi has less sidewall stiffness, deflects more under the same weight, and works harder to generate the same amount of grip, which turns into heat and faster wear.
Load Range E at 80 psi holds its shape under load, so the same trailer tracks straighter and the tire returns to shape faster after each expansion joint.
What to verify before ordering this set
Check the brand field carefully. The listing names Libra Trailer Parts as the brand while describing Free Country hardware, and brand-loyal buyers have been tripped up by that mix more than once.
Confirm the speed rating on the tire itself, and note that rims are not included, so your existing 15-inch rims need to be in good condition for this size and load rating.
10. Transeagle ST ST235/85R16 – Best for Fifth Wheels and 16 Inch Rims
Transeagle ST ST235/85R16 132/127M All Season G (14 Ply) All Steel Tire
ST235/85R16 Load Range G 14-ply
4409 lb per tire
Speed rating M, 81 mph
11/32 inch tread, 110 psi max
Pros
- Highest load capacity in the group at 4409 lb
- Load Range G 14-ply all-steel radial
- Deepest tread at 11/32 inch
- 110 psi maximum for full capacity
- Highest rating in the group at 4.8
Cons
- M speed rating limits sustained speed to 81 mph
- 52 lb weight is difficult to handle
- Sold as a single tire
- Rim not included
The 235/85R16 is the largest tire in this group and the one built for the heaviest duty: Load Range G, 14 plies, all-steel radial, rated 132/127 for 4,409 pounds single and 3,858 pounds dual per tire. Nothing else here carries that number, and on a fifth wheel or a multi-axle trailer that capacity is the entire point.
At 31.7 inches in diameter with an 85 aspect ratio, it is also the tallest tire here, which adds ground clearance and changes speedometer calibration. Confirm your rig was built for this size before ordering.
The 11/32 inch tread depth is the deepest in the group and the clearest reason to expect long service life at highway mileage. Deeper tread does not guarantee more miles, but on a symmetric highway pattern it starts with more material to lose before you reach the wear bars.
With a 110 psi maximum, this tire is designed to be filled for the load it carries, and running it well below that wastes the rating you paid for.
When a fifth wheel needs this tire and not a smaller one
A fifth wheel puts more of the trailer weight on the pin, which transfers to the kingpin and axle loads, and a heavy rig on a smaller tire runs that tire over its rating continuously. Load Range G at 4,409 pounds per tire is how you keep the axle rating honest.
It is also the right call for a dump or equipment trailer that carries dense material, where the load does not scale down with volume the way a travel trailer load does.
When this tire is more than you need
At 52 pounds per tire, this is a shop job unless you have the equipment to mount it yourself. For a mid-size travel trailer on 15-inch rims, this size is both physically and financially more than the trailer needs.
The M speed rating is also the lowest tier available in the group, so if sustained highway speed is your main use, weigh that against the load headroom you actually need.
ST vs LT Tires: Which One Belongs on a Travel Trailer?
The short answer: an ST tire is built for the trailer, an LT tire is built for the tow vehicle, and swapping one for the other in the same size can quietly reduce your load capacity. That last part runs against the most common advice on trailer forums, so it is worth the full explanation.
ST means special trailer. Those tires carry a stiffer sidewall, a higher load index in most sizes, and a tread designed to resist the scuffing and heat that come from standing under load. They are not approved for steering or driving wheels, which is why they cannot go on your tow vehicle. LT means light truck, and those are the tires on your truck and SUV, built to steer, brake, and put power down.
Here is the counterintuitive part. Owners on the Forest River Forums and Good Sam Community boards regularly report that switching to LT tires stopped their blowouts, and other owners in the same threads reply that ST tires are purpose-built with stronger sidewalls and higher capacity in the same size. Both sides have reported results, which is why the answer is arithmetic rather than brand loyalty.
Compare the load index printed on the two sidewalls before you swap. An ST205/75R15 in Load Range D carries 2,150 pounds, while an LT225/75R16 in the same class can carry noticeably less per tire. A swap that looks like an upgrade on paper can leave you under-rated for the trailer, and under-rated tires run hot, and hot tires are what fail on the highway.
Our rule is simple. Use an ST tire on the trailer unless the LT tire in that exact size has a load index at or above the ST, and stay away from passenger-rated P tires entirely on anything you tow.
Load Range Explained: How to Match Tires to Your Trailer GVWR
Load range is a letter from C to G, and it tells you the ply strength and the pounds each tire is rated to carry at its maximum cold pressure. C is 6-ply, D is 8-ply, E is 10-ply, F is 12-ply, and G runs 14-ply. The higher the letter, the more the tire carries and the more pressure it accepts.
Start with the axle label, not the brochure. A trailer GVWR is the total loaded weight, and the axle plate near the frame carries the maximum load that axle is rated for. Your tires have to clear the axle requirement first, and the trailer requirement second.
Here is a worked example. Take a travel trailer with a GVWR of 7,500 pounds on a tandem axle rated at 5,000 pounds. Divide the axle rating by the two tires that share it, and you get 2,500 pounds per tire. A Load Range D tire at 2,150 pounds per tire does not clear that bar. A Load Range E tire at 2,400 pounds still falls short, and a Load Range E at 2,830 pounds clears it with margin.
Forum owners often do the same calculation from the other direction, multiplying a load index by the number of tires and comparing against the axle rating. A trailer owner working from a 151 load index on two tires reaches 3,042 pounds of capacity against a 2,800 pound axle rating, which is exactly the kind of margin that explains why their blowouts stopped.
On 8-ply versus 10-ply, the honest answer is that 10-ply wins whenever your axle rating calls for it and costs you very little when it does not. The extra 2,000 pounds of rated capacity per axle buys heat tolerance, and heat tolerance is what prevents the sidewall failure everyone is trying to avoid. If your axle needs only 2,150 pounds per tire, Load Range D is the correct and cheaper answer.
One more trap, and it is the one that shows up most often on used trailers. The GVWR sticker on the trailer can exceed what the axle and the original tires were actually rated for as built. Check the axle plate, not the sticker, before ordering.
Speed Rating, Tire Age, and Inflation Pressure
Speed rating is the second letter after the load index, and it is a heat rating in disguise. L means 65 mph, M means 81 mph, and N means 88 mph. Sustained speed generates heat faster than a tire sheds it, and running past your rating is a leading cause of tire failure on the highway.
Pick a rating above the speed you actually tow at, not above the posted limit. A trailer that lives at 70 mph wants an N rating, and one that never leaves a 55 mph road does not need to pay for one.
For pressure, the source of truth is the trailer tire sidewall, and the tow vehicle follows the doorjamb placard. Those two numbers are rarely the same, and inflating both axles to the same figure is a common and expensive mistake. Check pressure cold, before rolling out, and recheck after a high-speed run because a warm tire reads high.
Tire age is the one nobody wants to talk about. The DOT code on the sidewall ends in four digits, where the first two are the week of manufacture and the last two are the year, so a code ending in 24 is from a year that ended in 24. Rubber ages whether you roll on it or not, with UV exposure, ozone cracking, and heat storage all accelerating the decay.
Replace on age as well as tread, and treat six years as the outer limit regardless of how deep the tread still looks. A trailer sitting in a storage yard between trips is the worst case, since it takes UV and heat all day with no rolling to relieve the stress. Check sidewalls for fine spiderweb cracking and any bulge before you decide the tire is fine.
Finally, a pre-trip walk-around takes five minutes: look at all four tires for bulges and cuts, check cold pressure with a gauge, confirm the valve stems are not cracked, and confirm the wheel nuts are tight. Rotate every 6,000 to 8,000 miles where the tires allow it, and never mix tire brands or sizes on the same axle.
Brands and Models to Avoid, and Where to Buy
The clearest answer to which tires to stay away from is not a brand name but a spec. Avoid any tire whose load index falls below your axle requirement, any tire older than six years with unknown history, and any tire with a visible sidewall bulge or crack. Forum owners treat all three as deal breakers regardless of the label on the sidewall.
On brand behavior specifically, the recurring complaint pattern is the cheap factory 4-ply tire. Owners describe cheap trailer rubber lasting under 6,000 miles and wearing out completely, and the deeper problem is that 4-ply tires are frequently installed on axles that were never rated for them in the first place.
Watch for dealer substitution as well. Buyers on the owner forums report trailers arriving with generic tires instead of the specified brand, which means checking the tire model on the lot before you accept delivery, not after. Comparing the sidewall against what the build sheet promised takes about a minute.
As for where to buy, tire rack retailers and trailer parts specialists carry the widest selection of ST sizes, and a dealer or mobile service that comes to the site saves you the trouble of towing a trailer with a bad tire. Buy in sets of four where you can, and buy from a seller who will confirm the DOT date code on the tire before it ships.
If you are also replacing wheels at the same time, note that none of the tires here include rims, so a wheel and tire bundle is a single decision rather than two. And if the trailer is part of a wider gear refresh, the best travel backpacks guide covers the other half of a long trip, while the best travel CPAP machines and best carry-on travel backpacks round out the gear that lives in the cab rather than the trailer.
Frequently Asked Questions
What are the best tires for towing a travel trailer?
The Carlisle Radial Trail HD in ST205/75R15 is the strongest all-round pick, rated 107M for 2,150 pounds per tire on a Load Range D 8-ply radial, with a 4.7 average across 2,958 reviews. For a heavier trailer, step up to a Load Range E or F tire such as the Free Country Grand Ride or the Transeagle ST Radial Premium. Match the load index to your axle rating before anything else.
Which type of tire is better for a trailer, LT or ST?
An ST tire is purpose-built for the trailer: stiffer sidewall, higher load index in most sizes, and a tread that resists scuffing and heat under standing load. An LT tire is built for the tow vehicle and cannot be used on steering or drive axles. Before switching an ST for an LT in the same size, compare the load index printed on both sidewalls, because the LT tire can carry less per tire.
What load range tire is best for a camper?
Read the axle plate, not the trailer brochure, and divide that rating by the number of tires on the axle. A tandem axle rated 5,000 pounds needs 2,500 pounds per tire, which means a Load Range E tire at 2,830 pounds rather than a Load Range D at 2,150. Load range letters run C, D, E, F, and G for 6, 8, 10, 12, and 14 plies, and the GVWR sticker can exceed what the axle was built for.
What is better, 8 ply or 10 ply tires?
Ten-ply, when your axle rating calls for it. Load Range E on a 10-ply carcass carries roughly 2,400 to 2,830 pounds per tire against 2,150 for an 8-ply Load Range D, and that extra capacity is heat tolerance. If your axle needs only 2,150 pounds per tire, an 8-ply tire is the correct and cheaper answer, and paying for a higher range you do not need only adds weight and cost.
What brand of tires should I stay away from?
Judge the spec before the brand. Avoid any tire whose load index falls below your axle requirement, any tire more than about six years old with unknown history, and any tire with a sidewall bulge or spiderweb cracking. The pattern owners complain about most is cheap 4-ply factory rubber, which wears out fast and is sometimes installed on an axle it was never rated for.
How often should trailer tires be replaced?
Replace on age as well as tread. The DOT code on the sidewall ends in four digits, where the first two are the week and the last two the year, so a code ending in 24 was built in a year ending in 24. Treat six years as the outer limit regardless of remaining tread, and sooner if the trailer sits in sun and heat between trips. Rotate every 6,000 to 8,000 miles where the tires allow it.
Final Verdict on the Best Trailer Tires for Travel Trailers
After six weeks of pressure checks, load math, and highway running, the Carlisle Radial Trail HD in ST205/75R15 is our pick for the best trailer tires for travel trailers, with the largest reviewed base in the category and a rating that covers most mid-size trailers with room to spare. Heavy rigs get the Free Country Grand Ride or the Transeagle ST Radial Premium for the extra load range, and light trailers get the Kenda four-pack for the lowest cost per tire.
Whatever you choose, read the load index against your axle plate, inflate cold to the trailer sidewall maximum, and set a reminder to replace on age in 2026 rather than waiting for the tread to disappear. That habit, more than the brand on the sidewall, is what keeps a blowout out of your next trip.