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What's the best tire pressure for different surfaces?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by LAZYMON, Dec 9, 2000.

  1. LAZYMON

    LAZYMON 1/2 ton status Premium Member

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    What\'s the best tire pressure for different surfaces?

    I was wondering if anybody has a chart or something like that advising what the best tire pressure would be for different surfaces like:

    Ice=======
    Deep Snow=
    Mud=======
    Rocks=====
    Gravel====
    Sand======
    Freeway===

    I know this probably varries with tire and rim size so maybe that could be included also.
    I have ProComp 35X12.5X15 on 8" rims.
    Thanks

    PRAY FOR SNOW!
     
  2. Bri's88Jimmy

    Bri's88Jimmy Registered Member

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    Re: What\'s the best tire pressure for different surfaces?

    On the highway I run my tire pressure at max the ride is rough but gass milage is a little better. I would say that what you listed your tires should be ared down low to about 12 lbs per squar inch so you have a bigger foot print so that you won't sink down. Ice I'm not shoure about.
    Hope this helps Brian
    88 jimmy stock
    rebuilt engine
     
  3. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: What\'s the best tire pressure for different surfaces?

    Tire pressure is kind of a trial and error thing. The variables are too vast to have one chart for everyone.
    I run 35x12.5x16.5 MT's.
    Freeway- 30 psi rear, 32 psi front.
    Same for ice, deep snow, and mud. The truck is too heavy to float anyways.
    Rocks-15 to 18 psi. any lower and I'll lose the bead.
    Gravel road-24 psi, enough to soften the ride.
    I've never had my truck on sand, but I would likely let as much air out as possible.

    Rene

    [​IMG]
     
  4. SANDMANPHIL

    SANDMANPHIL Newbie

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    Re: What\'s the best tire pressure for different surfaces?

    I HAVE 35X14.50 INCH MICKEY THOMPSON TIRES ON 15X10 RIMS. IN THE SAND I RUN 4PSI OF PRESSURE ALL THE WAY AROUND. 4PSI OFFERS GREAT FLOTATION IN THE SAND. I HAVE NEVER BEEN STUCK! ON THE HIGHWAY I RUN 10PSI OVER THE RECOMENDED MAX PRESSURE AT 30PSI.
     
  5. Butch

    Butch 1/2 ton status

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    Re: What\'s the best tire pressure for different surfaces?

    on the trail I run 12-13 up front and 10 in the rear on BFG 35X12.5 MT's on 10 inch rims. I have not rolled a bead yet and this pressure seems to work good for me

    I thought I was wrong once,
    but I was mistaken
     
  6. FWP

    FWP CRS

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    Re: What\'s the best tire pressure for different surfaces?

    Same as Butch, although I have run down to 8 psi, and poked 2 sidewalls as a result- SW desert trails

    <font color=blue>Maverick</font color=blue> <font color=red>CH 4 or 35</font color=red>
     
  7. nyyef

    nyyef 1/2 ton status

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    Re: What\'s the best tire pressure for different surfaces?

    i run 30 on the highway, on soft sand 10-15psi. (33X12.50 BFG ATs)

    Knife.
    knife.coloradok5.com
     
  8. Burt4x4

    Burt4x4 3/4 ton status

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    Re: What\'s the best tire pressure for different surfaces?

    Yep I have 33x12.5x15 Dunlop MudRovers on 10" wheels and the sand and trail crawlin is between 12-16 psi.
    Anyone air down for snow?? Or a snow coverd road, hardpack??

    72K5[​IMG]Led Zeppelin[​IMG]Rock ON![​IMG]
    http://www.burt4x4.coloradok5.com
     
  9. HarryH3

    HarryH3 1 ton status Author

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    Re: What\'s the best tire pressure for different surfaces?

    It also depends on the tire itself. BFG's flex pretty nicely at 15-18 psi. But I've seen the big bias ply Super Swampers aired down to 18 (38's on a 440 powered Ramcharger) that barely flexed at all! [​IMG]

    <font color=black>HarryH3 - '75 K5</font color=black>
    http://ThunderTruck.ColoradoK5.com
     
  10. 65FL

    65FL Registered Member

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    Re: What\'s the best tire pressure for different surfaces?

    I've been ice racing a few times, most people in the stock class air down
    to about 7-10 PSI. I have to agree with others. Try different pressures and
    see what works best for you.

    65fl
     

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