Originally Posted by kn7671
The Corvette has done this since the C5 in 1997. Other car high performance car manufacturers do this as well, so apparently there is real benefit when tuned and setup. Just because it doesn't make sense doesn't mean we should fear it.
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+1
All the high performance cars use a staggered wheel fitment. Corvettes, Vipers, Ferraris, Porsches etc. Even the GT500 comes stock with 19s front and 20s rear.
As others have stated, wheel weight makes the most difference for unsprung weight. TSWs Nurburgrings are excellent. I saw one member on another forum with a 19X9.5 TSW N that weighed 22lbs. In that size is it definitely lighter than stock AND allow for a larger brake kit. Also on those other cars, because the front fender of those exotics are generally much shorter than the rear fenders, if they ran same size front and rear wheels, the fronts would look bigger.
-Alex