Quote:
Originally Posted by surfcity335i
Well, I agree with some of what you said and also think some of it is factually inaccurate. Nevertheless, read my post carefully. The TireRack calculator says that with the taller tire mounted, the speedo will say 61 when the car is really going 60. Not vice versa like you say it should (and I agree with).
My thinking is that, essentially, the car will cover more distance per revolution of the axle on the taller tires, therfore making it go more miles per hour than the shorter tire when the axles are spinning at identical RPM's. Hence, with taller tires (or a larger overall diameter) the speedo should read 60 when the car is really doing 61. Please tell me how I am wrong here.
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Man, I musta been drunk when I sent that to you. I stand corrected and apologize for anything I said that was factually inaccurate.
So, when the
speedo reads
60 mph for the
taller tire at the
same rpms as the smaller tire, the
car would actually be
moving at a slower pace, because
the damn tire is taller and has longer to go to make one revolution as opposed to the smaller tire.