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    Results 1 to 5 of 5
    1. #1
      Join Date
      Aug 2004
      Posts
      2,413

      How do you figure sidewall height?

      id like to know the side wall height of a 245/40 18 and a 245 45 18




      What do the height figure into inches.
      Nothing says "I built this" better than tool marks and dykem blue..

      Follow my 3 link build. https://www.pro-touring.com/forum/sh...ad.php?t=61592


    2. #2
      Join Date
      Aug 2004
      Location
      Melbourne Australia
      Posts
      101
      Country Flag: Australia
      Hi Lowbuck

      Goes like this

      245 x .40 = 98 mm divide by 25.4 = 3.858 inches x 2 = 7.716 + 18 = 25.716 inches total height

      and

      245 x .45 = 110.25 mm divide by 25.4 = 4.340 inches x 2 = 8.68 + 18 = 26.68 inches total height

      cheers

      Roger

    3. #3
      dennis68 Guest
      Shawn, so to answer your question-the sidewall height of a 245/40 is 3.858 inches and a 245/45 is 4.340 inches.

    4. #4
      Join Date
      Aug 2004
      Posts
      2,413
      Thank you big help
      Nothing says "I built this" better than tool marks and dykem blue..

      Follow my 3 link build. https://www.pro-touring.com/forum/sh...ad.php?t=61592

    5. #5
      Join Date
      Jun 2002
      Location
      Oregon
      Posts
      1,387
      Country Flag: United States
      I always go to tire rack and get the total tire diameter, then subtract the wheel diameter, divide that total by two and that's the sidewall...works for me!!
      Tony




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