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skydvejam

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Posts posted by skydvejam

  1. OK here are my 2 cents worth from some experance racing, not subs yet, and it has been on many diffrent surfaces.

     

    High speeds, cold surface= highest psi

    High speeds, hot surface= lower psi

    Highway speeds, any temp= lower still psi

    Lower racing speeds = lower still psi (at the cost of tire life though)

    Off road, crauling ect. ect.= Very low psi

    Here is what happens with the changes, with higher PSI your tire contact patch at first is smaller, less tire is on the ground, as you start moving though that patch causes friction, and that increases presure in your tires. Now you also have to take into account the ambent presure that you are operating in. Then also you have the fact that as you add presure your sidwals get stiffer, that increses your corning to a point, unless your sidewall is built for lower presures.

     

     

    So to sum it all up, the max psi on the tire is NOT what your tires should be at, you will have new tires on the sides and nothing in the middle, the best presure is from a lot of diffrent factors of how you use your car.

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