Originally Posted by Rvmagoo
I had to get new tires for the fifth wheel and they installed E rated instead of the D rated from factory. Should I use the same tire pressure rating posted on the RV (65psi) or do I need to adjust. The Weight rating on the unit is 2270 lbs per wheel.
Do your rims have the capacity to support the load and psi rating of the LRE tires?
When using tires of the same size and design but with a higher load capacity the information on the tire placard is still valid. The LRE tire will carry the same load as the LRD tire at 65 psi. However, you gain no advantage with the new tires without increasing the tire pressure. On the other hand you should NEVER use less tire pressure than what is recommended on the tire placard.
It is important to note that many ST tire manufacturers require their tires to be aired to full sidewall pressures. That information will be in the tire’s warranty package.