Tire upgrade air preasure ?
I recently replaced my D rated Goodyear marathons with the newer Goodyear E rated endurance tires. The older d rated tires recommended air preasure is 65lbs as listed on the factory sticker on the si...
Forum Discussion
The advantage of the 80 psi E tire you bought over the OEM 65 psi D tire comes only at those higher pressures. Derating the new E to a D doesn't make cents/sense for tires in a trailer position. The E tire advantage is lost.
Goodyear Tire and Rubber .... weighing RVs
Special Considerations
Unless trying to resolve poor ride quality problems with an RV trailer, it is recommended that trailer tires be inflated to the pressure indicated on the sidewall of the tire. Trailer tires experience significant lateral (side-to-side) loads due to vehicle sway from uneven roads or passing vehicles. Using the inflation pressure engraved on the sidewall will provide optimum load carrying capacity and minimize heat build-up.*
Goodyear Tire and Rubber .... weighing RVs
Special Considerations
Unless trying to resolve poor ride quality problems with an RV trailer, it is recommended that trailer tires be inflated to the pressure indicated on the sidewall of the tire. Trailer tires experience significant lateral (side-to-side) loads due to vehicle sway from uneven roads or passing vehicles. Using the inflation pressure engraved on the sidewall will provide optimum load carrying capacity and minimize heat build-up.*
