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How many inches is a 285 tire?

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  • How many inches is a 285 tire?

    If anyone knows, PLEASE tell me. Either post it here or send me a pm. Thanks
    Last edited by silveradoguy98; 08-30-2007, 12:46 PM.
    2004 Silverado 2500HD Duramax
    Custom Cold Air Intake
    4" exhaust with 5" chrome tip (no muffler)
    Edge Juice with Attitude
    Flex-a-lite Electric Fans
    T-bars cranked with 1" blocks in rear
    Bilstein 5100 racing series shocks
    Hopefully more to come!

  • #2
    Re: How many inches is a 285 tire?

    285/75-16 is 32.8 inches.


    Much like alcohol, tobacco, and voting there should be an age requirement for computer usage.
    "Drag racing helps me get rid of all my extra cash."
    Team credit card holder and crew chief - "Hot Rod" Heather JD4193 & Holly "Wood" JD4145

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    • #3
      Re: How many inches is a 285 tire?

      Ok, in a tire size such as 285/75R16; 285 is the width (in millimeters), 75 is the aspect ratio (as a percent), the R means it is a radial tire, and 16 is the rim size (in inches). So 285 divided by 25.5 (thats how many millimeters in an inch) gives us a width of 11.2 inches wide (roughly). To get the height we multiply that by .75 (the aspect ratio) to get 8.4". That is only the height of tire (one side) so multiply that by 2 and add the rim size to get the total height. This way we get 32.8 as well. Now can you figure it out by yourself too.

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      • #4
        Re: How many inches is a 285 tire?

        285x75/r16 =32.8x11.2
        Last edited by RnuovZ71; 08-30-2007, 12:43 PM.

        Infantryman in the US Army

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        • #5
          Re: How many inches is a 285 tire?

          1" = 25.4mm :read:

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          • #6
            Re: How many inches is a 285 tire?

            32.8x11.2 is the calculated conversion. If you want to know for a specific brand and style tire check the munufactures websites they usally have the tire height in inchs listed.

            Vortec305/np243/4L60E/14SF/3:73s-3"BL, 295 BFG's, Gibson 3" Cat-Back, W4M 93 Tune, 20% Tint

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            • #7
              Re: How many inches is a 285 tire?

              if i ever have any questions on tire size i just go to tirerack.com and put in the tire size im lookin for them pic out the brand and look at specs....it will tell you everythin you need to know!
              http://www.tirerack.com/tires/Spec.j...e1=yes&place=5
              TireFryr- Built 356ci Ported Accel super ram, Coated LTs,Built 700r4,2800Yenk stall,3.73posi "TractionLess"

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              • #8
                Re: How many inches is a 285 tire?

                yeah that is the spec'd size. What does one measure on the truck, less than that. But it all depends on the individual tire.
                2000 Tahoe Z71, 14bFF 6 lug, 241 swap, bumpers, sliders.
                1988 K5, 350/700R/241 locked 10B, welded 12B, 35's, half doors.

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                • #9
                  Re: How many inches is a 285 tire?

                  Originally posted by thekl0wn
                  1" = 25.4mm :read:
                  :word:

                  Check the stickies here too. One of them has a tire size calculator and a few other things.

                  '07 Sierra Denali - 6.2l L92, 6L80E, AWD w/3.42s, HPTuners, Innovate LM-1, Volant CAI, 160* t-stat, N-Fabs, 2.5" leveling kit and 285/65/18 Nitto TGs

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                  • #10
                    Re: How many inches is a 285 tire?

                    I just got a set of 285/75/16 Kumho ventures and they measure 33 1/4 Do some companies just run bigger because my BFG measured just under 33.
                    Lovin my new Hemi:
                    True Dual AT 3030, Ramhammer, comp268, Sharadon Sp2 heads, SCT, Custom Kook LTs headers. Mark VIII efan, Caltracs, Fastman P&P Throttle Body, 4.56s, Edge 3000stall, NX 100 shot!! and knockin on 11s door!

                    Soon to be back in a Silverado!! im thinking a whipple'd 5.3l??

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                    • #11
                      Re: How many inches is a 285 tire?

                      Originally posted by mihc45
                      I just got a set of 285/75/16 Kumho ventures and they measure 33 1/4 Do some companies just run bigger because my BFG measured just under 33.
                      Yeah, some tires have deeper tread.

                      '07 Sierra Denali - 6.2l L92, 6L80E, AWD w/3.42s, HPTuners, Innovate LM-1, Volant CAI, 160* t-stat, N-Fabs, 2.5" leveling kit and 285/65/18 Nitto TGs

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                      • #12
                        Re: How many inches is a 285 tire?

                        Originally posted by Kenny C
                        Yeah, some tires have deeper tread.
                        I don't know the truth to this, but the last time I was at a tire store, the sales rep said that the tire size, is based on the bottom of the tread, so you would have to add 2X the tread depth to get the overall height... Now if that's true or not...

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