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First off, stock wheels/tires are all 16", no 15". The width does alter, from 7.5" wide wheel with a 225/50 tire on all 4 corners to the U.S. Spec TT having a 8.5" wide rear wheel and a 245/45 rear tire. So you altered the balance by going to a larger diameter wheel out back than up front. now if ouikikazz keeps his tire relation ships the same, a set of stockers and a different but equal set of summer tires/wheels there will be no change in geometry when swapping the sets of wheels/tires. So you changed your wheels/tires and the car handled differently. I'm totally shocked... Well not really. You changed a whole bunch of variables at one time. The tire size, the rubber compound of your new tires, the tread pattern of those new tires, the fact that you had the alignment done, the sway bars you installed... Which of those variables had the greatest effect on the handling of your vehicle? God I hate typing... Unless ouikikazz gets a set of tires that are sized in different proportions, fronts the same, but rears much different in diameter, than no adjustments will be required each time he swaps from one set to the other. :"With the stock 15"/16" setup on my 91, I've always felt the car had a real easy tendency to go into a snap oversteer situation. When I upgraded to the stock 16"/17" combination, I also increased the size of the rear tires up to 255x40x17 which is one size larger than the stock rear tire. Because of the larger size of the rear tire as compared to the fronts, (205'sx16"), my car tends to be much more neutral than in the past even with the newer Dali sway bars."
:The link.
:[ http://www.nsxprime.com/FAQ/Performance/cornerbalance.htm ]
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