Best Trailer Tires AI pick
Chosen by an AI model from its trained knowledge, with its reasoning.
AI pick (line): Goodyear Endurance
An ST radial trailer tire with a strong reputation among RV and boat trailer owners for durability compared with commodity trailer tires.
Not for: Owners of very heavy trailers whose axle loads exceed what Endurance offers in their size, who should look at LT or commercial tires.
AI picks by need
For value ST radial
Carlisle Radial Trail HD (line)
A widely available ST radial line covering common utility, boat and camper trailer sizes.
Not for: Owners who want a tire with a stronger record of casing durability on heavy travel trailers.
For heavy travel trailer or fifth wheel
Sailun S637 (line)
An all-steel-construction ST trailer tire popular among owners of heavy campers and fifth wheels.
Not for: Light utility trailers that do not need a high load range.
For boat trailer
Maxxis M8008 (line)
A long-running ST radial line commonly fitted to boat and utility trailers.
Not for: Owners of trailers that need load range G or heavier casings.
What the AI looks for in Trailer Tires
- Load capacity margin
- Multiply the per-tire load capacity by the number of tires; the total should exceed the trailer's GVWR, ideally with a margin of around 10 to 20 percent. Trailer tires are often run near their limit, and overloading is the leading cause of failure.
- Speed rating
- Check the speed symbol on the sidewall; older ST tires without a symbol are rated for 65 mph. Running ST tires above their rated speed builds heat and leads to tread separation.
- Inflation
- Run ST tires at the maximum cold pressure shown on the sidewall unless the trailer maker specifies otherwise, and check before every trip. ST tires depend on full pressure to carry their rated load.
- Age
- Replace trailer tires at around five to six years from the DOT date even with good tread. Trailer tires sit for long periods and age-related casing failure is common.
- Bias vs radial
- Do not mix bias and radial tires on the same trailer. Different constructions track and carry load differently, which causes sway and uneven wear.
Brands that matter
- Goodyear: Endurance line is a well-regarded ST radial choice.
- Carlisle: One of the most common trailer tire brands on new trailers.
- Sailun: Value-priced trailer tires with heavy-duty construction options.
- Maxxis: Established ST radial maker for boat and utility trailers.
- Westlake: Budget ST tires often found as original fitment.
What to avoid
- Putting passenger P-metric tires on a trailer.
- Running trailer tires underinflated or at highway speeds above their rating.
- Keeping tires past their age limit because tread remains.
- Mixing bias and radial tires on one trailer.
Questions
Can I use LT tires instead of ST tires on a trailer?
Often yes, if the LT tire's load capacity meets the trailer's needs, which may require a higher load range. Check rim width and that the load capacity at your pressure covers the weight.