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  • recommended tire pressure

    I have a 93 RCLB 4.3L. It had 31's on it when I bought it. I just replaced the tires with another set of 31's (BFG Radial Long Train TA). Does TA mean T***s and *ss? Anyway, the shop inflated them to 35lbs which seems to work good. Since they are nowhere near the original size, I can't be by what's on the door placard. What air pressure would work best? More Info:

    In four years, I have loaded to where the body noticeably sinks maybe twice
    It's a 2 wheel drive, and I don't off road but there's lots of mud in my yard and I've been stuck before
    I drive 30 miles to work and back which is almost all highway.
    The last set lasted 52000 miles running at mid 40's for air pressure with somewhat more wear in the middle tread than the edges.

  • #2
    Re: recommended tire pressure

    35 is the recommended tire pressure for that truck, doesnt matter if there 28's or 44's thats whats recommended for that vehicle, obviously some people need to run more or less depending on how u use ur vehicle but if the middle was more worn out then the outsides then they where overinflated, 35 psi will give u optimum life and ride out of those tires

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    • #3
      Re: recommended tire pressure

      also check whats recommended on the sidewall of the tire i lnow from wheni worked at sears auto alot of times the manufacturer was very specific about the pressure of the tire which sometimes differed from the truck truck specs but that was only due to a bigger size tire then what came on the truck

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      • #4
        Re: recommended tire pressure

        the pressure on the tire is MAXIMUM pressure, not recommended it clearly says that so u dont fill a passenger car tire up with 80 psi and then slap it on a one ton

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        • #5
          Re: recommended tire pressure

          agree with "toomanyballs". Just went through this on my truck this weekend. I had a set of 33x12.5x15's on my wrangler. I aired down once and then refilled. I just looked at the max psi of the tire. Comes to find out I overfilled the tire per the weight of the vehicle. The jeep states 35psi, and I wore the centers down about a 1/16th of an inch than the outers. I wanted them on my truck and the tire guys school'd me on it. I actually asked the question first and they explained it to me. It was news to me, so now I know.
          sigpic Border Patrol

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          • #6
            Re: recommended tire pressure

            all the tires i have ever seen say the max pressure and then it will give a general range between say 32-38 psi

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            • #7
              Re: recommended tire pressure

              Originally posted by RednckChevy View Post
              all the tires i have ever seen say the max pressure and then it will give a general range between say 32-38 psi
              That's just the tip of the iceberg.
              MOST are around 27-35 psi (including car or "P rated" tires), a lot have a max of 44 psi (I dk why but that's a magic number) and some LT tires go as high as 120psi.
              3/4 ton trucks usually have a 60 front/80 rear reccomended pressure depending on make model year.

              Long story short, go by the recommended pressure in the door. If you're towing or muddiing adjust accordingly.
              Last edited by Shwa Kid; 04-06-2010, 11:10 PM.
              -Pat

              "I drive it like I built it.... poorly."

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              • #8
                Re: recommended tire pressure

                depends on what "LOAD" the tire is obviously a higher load tire will take different pressure than a stock Passenger tire
                NEW 2004 Sierra D-MAX

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                • #9
                  Re: recommended tire pressure

                  My door sticker says 35 psi cold, but I've had much better luck running in the low 40 psi range with my last two sets of tires. Keep an eye on tire wear before your first rotation and that should give you an indication.
                  1999 2 Door Tahoe 4x4 w/ 14 Bolt SF & TruTrac. All kinds of upgrades, SOLD 1/2012
                  2008 Silverado 1500 Z71, leveling kit, exhaust, SOLD 9/2014
                  2014 Silverado 1500 Z71, leveling kit, SOLD 8/2016
                  2016 Silverado 1500 Z71, 6.2 V8, all stock

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                  • #10
                    Re: recommended tire pressure

                    I almost never put any kind of weight on this truck. It's a getter. It gets me to work, it gets me to the dump, it gets the groceries, and it gets me dirty.

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                    • #11
                      Re: recommended tire pressure

                      I run around 40-42 with my LT 265/75/16 load range C. My door sticker also says 35, but 40-42 i get even wear. 35 is better then what my f150 said. 25F 32R, that was for stock 255/70/16. I ran that size tire at 35-40.
                      sigpic
                      2000 Chevy Silverado Z71
                      5.3L 4.10's G80

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                      • #12
                        Re: recommended tire pressure

                        Go by the door sticker if its still there. I have 90 and its gone.
                        1997 Chevy K1500 4x4 truck. 350Vortec

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                        • #13
                          Re: recommended tire pressure

                          Originally posted by toomanyballs View Post
                          35 is the recommended tire pressure for that truck, doesnt matter if there 28's or 44's thats whats recommended for that vehicle, obviously some people need to run more or less depending on how u use ur vehicle but if the middle was more worn out then the outsides then they where overinflated, 35 psi will give u optimum life and ride out of those tires

                          Matters HUGE. Door sticker tire pressure is only for OE tire size. Believing otherwise is dangerous. :read:

                          For example, my door sticker says 55psi, 225/75/16. Put that in my 32x11.50x15 BFG (max 40psi) and watch them explode.

                          As soon as you change size, load range in the same size, etc, that door sticker means very little. Chalk test will tell the truth.

                          I run 30/28 now. 50,000mi 50% tread left, and 18mpg.
                          Last edited by Quyonmob; 04-07-2010, 06:11 PM.

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                          • #14
                            Re: recommended tire pressure

                            I just put new tires on my truck . I went with the stock size but instead of running a P245/75/16 I am running a LT245/75/16 load range E. The P tire was 44 psi cold max and these dang LT's are 80 psi cold max. They inflated them at 36psi from the tire shop and they looked almost flat. The sidewalls were bulging something fierce. I aired up to 38psi but they still looked bulgy. A buddy said air them to 50psi. I did and drove it home, around a 4 mile trip. Harsh ride compared to the 36psi. Is 50 psi too much for everyday driving? Should I air them down a bit?

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                            • #15
                              Re: recommended tire pressure

                              i would say 42 to 45 would be ideal.
                              you now have a load E tire either 1,3 or 5 ply tire. so its definatly going to run a lot harder.
                              i run LT tires and more psi cause
                              I LIKE MY TRUCK TO RIDE LIKE A TRUCK
                              NEW 2004 Sierra D-MAX

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