Quote:
Originally Posted by irpq11
The 21" wheels won't have ANY affect on performance as far as speed in a straight line. The outside diameter of the whole wheel is the same. Performance may be affected in other ways but straight line speed and power isn't one of them.
And yes the IS350 is really quick but she shouldn't beat me by 9 car lenths.
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if you can prove the mass of the 21 and tire is equal to or less than the stock 20....you are correct. rotating mass, my friend. the fronts wont matter. this is why alum driveshafts are so popular now with manufacturers. the bigger the rim, the less tire footprint on the ground, which also means less traction--but corners like the devil owns it--to a point.
rotating mass robs torque.