How much air pressure do you run in your tires?

Discussion in '40- & 55-Series Tech' started by elum, Jun 20, 2006.

  1. elum

    elum

    Messages:
    335
    Location:
    Inland Empire
    I got 35"x13.5 / 15 Mickey Thompson Baja Crawlers on my rig... I found that the P.O. had put in around 35 psi in there. I aired it down to 30-31 PSI to try and get more even wear on them. What do you all reccomend or what PSI do you run in your tires for regular driving/commuting?
  2. projektdotnet

    projektdotnet

    Messages:
    1,873
    Location:
    Port Orchard, WA
    30(ish) on road and 10-15 (depending if someone has onboard air with us) on trails

    Whoops Edit: 33x12.5 R15 BFG MudTerrain
  3. John Smith

    John Smith In the garage GOLD Star

    Messages:
    3,851
    Location:
    Maryland
    It all depends on the tire construction and the size.

    That said I run my 36" Irok bias at 21psi on the street and they are wearing evenly so far. Just don't run them too low, or you will build up heat which will kill the tire.
  4. 78-FJ40

    78-FJ40

    Messages:
    363
    Location:
    Northern, CA
    32 psi in my 35x13.50x15 Toyo Open Country MT's.
  5. Bossman

    Bossman SILVER Star

    Messages:
    3,473
    Location:
    Hamburg, AR
    Here's what I do. Find a parking lot or deserted street. Take some chalk and mark a line across the tread on your tires. Drive in a straight line for a about 100 feet or so. Get out and look at how the chaulk is wearing off. If more in the center, let a few lbs out and repeat. Stop when you get even wear across the tire. These things were designed for 28=29 inch tires - you don't need 35psi in a much larger tire. Just my .02
  6. wantatlc

    wantatlc

    Messages:
    1,483
    Location:
    SoCal - westsiiiide
    I currently run about 35 or so (their rating) on the road in my 33x12.5 BFG Mud-Terrains. off road really varies. hell, I would not mind if they wore a little faster so I could justify getting the tires I really want. :)
  7. rusty_tlc

    rusty_tlc Dain Bramaged Member

    Messages:
    11,558
    Location:
    Reno, NV
    32 on my 33 x 12.5 BFG AT's for street. Lots of miles on them and very even wear.

    Pressures below 17 off road got scary with them IMHO. But that could be the rims I'm running.
  8. bsevans

    bsevans Focus on the Journey

    Messages:
    2,011
    Location:
    Southern Arizona
    I run 28-30 psi on my 33x10.50 depending on the time of year. Less when it's 110 outside. They get rotated at least every 5000 miles, if not sooner.
  9. CruisinGA

    CruisinGA

    Messages:
    6,152
    Location:
    Georgia Tech
    Front- 6 psi
    rear- 5 psi

    street or trail
  10. theoger

    theoger

    Messages:
    7

    Yeah, that's about where I am with 38.5/15/15 Boggers. When I had 35's on I usually ran around 15 front and 12 rear.
  11. lone gunman

    lone gunman

    Messages:
    1,389
    Location:
    granite falls WA.
    35x12.50 30psi on road and about 15 off road.

  12. LC_Hamma

    LC_Hamma The Anti-Leafer SILVER Star

    Messages:
    2,829
    Location:
    Dallas, Georgia
    You run that pressure on the street/ highway? I run the same tires & don't think it's very safe over 30ish mph, IMO. You'll get squirrely on the turns. I run about the same psi on the trail, but for the street, it's over 20 psi.

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