Forum Discussion

2ndhom's avatar
2ndhom
Explorer
Oct 08, 2013

Tire Presures ... Hot and Cold

I know tires have recommended pressures listed on the sidewall and always assumed it is the hot number. Is there an average rule of thumb as to the temperature swings between hot and cold. 5, 10 or 15 degrees? 110 - 114 seems to be the hot numbers. This, for talking purposes would be for a 40', single axle class A.
Class A

22 Replies

Show More
  • Beverley_Ken's avatar
    Beverley_Ken
    Explorer
    Oct 08, 2013
    Sorry, your wrong. Tire pressure should always be the cold/ambient temperature before driving. The pressure shown on the sidewall of the tire is max. Cold pressure for that tire.
    The recommended pressure will come from the tire makers chart according to the actual weight on the tire. Actually individual axles/singles or duals. Failing to have actual weights, start with the pressure recommended by the manufacturer, it will be on a label somewhere on your vehicle.

About Motorhome Group

38,736 PostsLatest Activity: Jul 24, 2025