Tire pressures
This has probably been asked before but because we are leaving in the AM for the summer I need quick advise from the folks on here. We have a 2013 Ford F350 SRW 6.7L Diesel and a new to us 2016 Key...
Forum Discussion
We just put on 4 new Goodyear Endurance tires on the 5th wheel. The tire says to run at 80psi and that is what the tire company put in them.
The label on the 5th wheel says to run 65psi in the tires.
Which should we follow? One of us says the label recommendation and the other says the tire recommendation.
What say you? Please advise!
Goodyear tire knows about tires on trailers and offer best advice .
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.***
Most likely the 65 psi on the tire placard was for a OEM load D tire (65 psi). Unlike tire placards on a truck...most modern trailer tire placards recommend max sidewall pressures for the OEM tire size and load range on the placard.
Tires on a trailer operate in a much more severe service (side scrubbing) on every turn as Goodyear mentions.
Sounds like the Endurance are a tire uprate to a load E at 80 psi. I would run them at 80 psi but watch the center on the tread for wearing faster (over inflation issue).
When a trailer is over tired you can run a chalk line test. Run a chalk line across the tread...then drive in a straight line till the chalk line starts to wear off. You want the same wear across the entire tread for best long term wear/service life/braking on wet pavement/etc.
