Carlisle Tires
34'Heartland 5th wheel. Came with Tow max tire. 5 years of good use . Probably around 10,000 miles. Noticed a low tire, 65 lbs, and brought it back up to 80. I should have stopped by a tire store...
Forum Discussion
otrfun wrote:Dankenbring wrote:Not sure if it's accurate or fair to lump all ST tires together.
Most of the problems have been the ST tires on large travel trailers and fifth wheels weighing over 14K lbs.
There are G-rated, ST tires like the Gladiator and Hartland (Discount Tire, Gladiator housebrand) that have a 14-ply rating, all-steel carcass, an L-N speed (75-87 MPH) rating, and weigh 60+ lbs. (typically 20-25 lbs more than the same size E-rated tire). To my knowledge, there haven't been any issues with these ST tires, even on the very heaviest rigs.
Danken makes a good point about the size of the trailers and the use of ST tire having most of the issues. IMO a 80 psi tire rated in the 3400-3600 lb range are simply too soft/flexy for that kind of weight on a vehicle that the tires slide sideways as the vehicle turns.
This is where the LT or new gen ST G at 110 psi makes better cents/sense on heavy trailers with 7k axles or max loaded 6k axles.
