tires
Hi, New to rv's. Just purchased a used one and was curious about the tires. They are LT235/85R16E Cooper and sidewall says 80psi max. I read the data plate on the steering column and it also has sa...
Forum Discussion
The data plate is likely suggested pressure at GVWR fully loaded weight, actual optimal tire pressure may be lower than this if you are not at weight capacity when traveling. The tire max capacity may exceed the max load carrying capacity of the axle.
Using For example, you may have an axle rated to carry 6000 pounds, with tires that are rated at 3,080 pounds per tire at 75psi, 3250 pounds per tire at 80 psi, etc. and a max capacity of 100 psi. In this situation the limiting factor is the axle, any pressure over 75 psi just makes the ride stiffer, and the middle of the tire wear out faster. (f course if when you are loaded you are only carrying 5400 pounds on that axle, the proper pressure may be 65 psi....
The way to find out correct pressure for your coach is to get 4 corner weights with it loaded for travel, then consult the tire manufactuers load pressure chart like this one http://www.rvtirepressure.com/assets/images/extrapages/michelin_rv_load_inflation.pdf.
Using For example, you may have an axle rated to carry 6000 pounds, with tires that are rated at 3,080 pounds per tire at 75psi, 3250 pounds per tire at 80 psi, etc. and a max capacity of 100 psi. In this situation the limiting factor is the axle, any pressure over 75 psi just makes the ride stiffer, and the middle of the tire wear out faster. (f course if when you are loaded you are only carrying 5400 pounds on that axle, the proper pressure may be 65 psi....
The way to find out correct pressure for your coach is to get 4 corner weights with it loaded for travel, then consult the tire manufactuers load pressure chart like this one http://www.rvtirepressure.com/assets/images/extrapages/michelin_rv_load_inflation.pdf.
