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Mountianeer's avatar
Mountianeer
Explorer
May 13, 2013

2012 GMC Sierra 1500 Tire Pressure Question

GMC recommends 35psi. Tire max is 45psi. What should I be running and why?

Right now this is my daily driver. Sometimes carrying loads of mulch, gravel, etc. Not towing YET (TT next spring).

Thanks.
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  • Cybergrunt's avatar
    Cybergrunt
    Nomad
    May 13, 2013
    Former GMC 1500 owner and current F-150 owner. I always run recommended for daily driving (because the engineers obviously recommend it). When towing, I air up to max pressure (less squishy of a ride, less side-side).
  • Old-Biscuit's avatar
    Old-Biscuit
    Explorer III
    May 13, 2013
    Hummmmmmmmm....what does the door sticker state for unloaded and loaded?

    That's what I'd recommend.

    The MAX on tire sidewall is the MAX PSI for MAX LOAD on tire.....not normal usage.

    When hauling mulch/gravel then air up rear tires so that they aren't overloaded (under inflation kills a tire FAST)
    Otherwise run the recommended psi front/rear

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