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Kountryguy's avatar
Kountryguy
Explorer
Jul 13, 2014

Tire Inflation Guide

Can anyone tell me where I can find a chart telling what pressure I should run for the axle weights that I have? Thanks

26 Replies

  • Need to look at the load range on the replacement tires. Most RV replacement tires are one or two load ranges high with a higher max. pressure then what was originally put on. I was taught many moons ago that to be safe air tires to 10% of what the max. pressure is on the tire. This has worked for 40 years now.
  • CapriRacer wrote:
    Word of caution:

    Those inflation charts are MINIMUMS!! They are NOT recommendations.

    And just an FYI: Inflation pressure only has a minor effect on tire wear. On a trailer, wear is hardly ever the issue - unless you have an alignment problem. So you can use a lot more pressure than the chart says and still have good tire wear.


    EXACTLY!! I use the placard that shows recommended tire psi that is located on the rv. One will not go wrong by airing to max sidewall pressure either...I run GY G rated G614's and it's recommended by 5er manufacturer as well as Goodyear, to run these tires on this 5er at 110 psi.....When I had RIBS, Michelin recommended to run them at 80 psi, (also what was on the placard of the 5er I had at the time..same psi rating as OEM tires that came on that 5er).

    It just doesn't seem "real world" to weigh each tire and air each tire to a possible different amount.s. Don't know how many could realistically do this on these forums...Much more real world and far simpler to, at the very least, to air tire to max sidewall pressure, IF tire is same size and tire rating as OEM tire was..
  • Word of caution:

    Those inflation charts are MINIMUMS!! They are NOT recommendations.

    And just an FYI: Inflation pressure only has a minor effect on tire wear. On a trailer, wear is hardly ever the issue - unless you have an alignment problem. So you can use a lot more pressure than the chart says and still have good tire wear.