ST235/80R16 Trailer Tires

ST235/80R16 is the standard 16-inch trailer tire for fifth wheels, goosenecks, equipment trailers and larger toy haulers. It is also written as 235/80R16 or 235/80-16 and measures about 30.8 inches tall and 9.3 inches wide. The ST prefix means Special Trailer: a stiff sidewall built for heavy towing loads, not for a pickup.

We carry it in load range E (10-ply, about 3,520 lbs per tire) and load range F (12-ply, about 3,960 lbs per tire), all radial, including the Goodyear Endurance. Match the load range on your current tire or the trailer's capacity sticker, and never go lower. Orders ship from the U.S. with tracking.

Common questions

E or F load range?
Divide the loaded weight of the trailer by the number of tires. Under about 3,400 lbs per tire, load range E is fine. Above that, or for a fifth wheel loaded for long trips, go to F. Both fit the same 16x6 wheel but F runs higher pressure, so check your wheel's rating.

Is 235/80R16 the same as 235/85R16?
No. The 85 is about one inch taller and has more capacity. They do not mix on the same axle. If your sidewall reads 235/85R16, see our ST235/85R16 trailer tires.

Do you sell it mounted?
Yes. See our ST235/80R16 tire and wheel assemblies in 6 on 5.5 and 8 on 6.5 bolt patterns.