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general grabber tire pressure?

Discussion in 'Truck & Equipment Repair' started by 97S104x4, Nov 12, 2011.

  1. 97S104x4

    97S104x4 Senior Member
    Messages: 158

    those running general grabbers how much tire pressure are u running in your general grabber AT2 tires?
  2. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    What size/load range? On your S10?
  3. 265-75-16 in summer we are at 62-68 psi. Winter it goes up to 75 load range e.
  4. 97S104x4

    97S104x4 Senior Member
    Messages: 158

    tires are 31x10.5 x15 load range C, yes for the s10. when the tire shop put them on they only put 32 psi, but just curious what your running them at with the plow on the front
  5. brad96z28

    brad96z28 PlowSite.com Addict
    Messages: 1,525

    I think there 50 max on the c . There is not much weight on ur truck or the plow to worry about airing them up. Id say 40, 44.
  6. vegaman04

    vegaman04 Senior Member
    Messages: 378

    Most passenger tires are max at 44 psi cold. I would run 38-40
  7. mayhem

    mayhem PlowSite.com Addict
    from Peru MA
    Messages: 1,016

    Whatever it says on the sticker on the door of the vehicle.
  8. theholycow

    theholycow PlowSite.com Addict
    Messages: 1,180

    If they're the same size as the tires written on the door sticker, the pressure listed there is a safe minimum pressure. If not, consult a load-inflation chart for that minimum.

    You could go lower for specific purposes like plowing, but be sure to air back up for highway driving and for driving normal road speeds on roads with lots of potholes.

    You could go higher for better wear and fuel economy. The usual things that people are afraid of with higher pressure are almost all bunk, or at least severely exaggerated. I prefer not to exceed the maximum on the sidewall, afraid that I could somehow get blamed for that in a crash. I mostly run the maximum, although my pickup doesn't get good wet traction with 80psi in the rear and no load so I run those rears at 70.
  9. monson770

    monson770 Senior Member
    Messages: 133

    i've got the E range grabbers, 65psi summer / 75psi winter.
  10. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    Those tires support 2270 lbs at 50 psi. The scale isn't linear, but 32 will probably support about half that. The best thing is to weigh each axle of the truck, and contact General for inflation specs based on your weights. I'm guessing 40 on the front and 35 or so on the back would be fine with the plow on and a few hundred pounds ballast in the bed.

    http://www.tirerack.com/tires/tires...hite Letters&partnum=105SR5GRAT2OWL&tab=Specs
  11. Brian Young

    Brian Young PlowSite Veteran
    Messages: 3,394

    I dont think it matters...those tires are JUNK! I'm on my second set and these only have about 12k on them and they are at 3 and 4/32. Going to go through all the hassles of pro rating again! Great for snow but I would look into a second set of rims and leave them on there for winter only.
  12. theholycow

    theholycow PlowSite.com Addict
    Messages: 1,180

    Load-inflation charts are standardized by industry associations. You can use any manufacturer's chart.


    31x10.5x15 radials are good for:
    20psi: 1400lbs
    30psi: 1595lbs
    35psi: 1765lbs
    40psi: 1945lbs
    45psi: 2100lbs
    50psi: 2270lbs

    The S10 could probably get away with 20psi but fuel economy, wear, and handling would probably be terrible.
  13. dr_destructo

    dr_destructo Member
    from Indiana
    Messages: 48

    Well, I love the tires. Have them on my F250 and Jeep Wrangler. Awesome grip. Quiet. I run 75lbs in winter. Great tire.