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Join Date: Oct 2010
Location: Franklin, TN
Posts: 5,900
Well, the photo shows that the car is a lot more roll stiff at the front than the rear. Is it good to have the front inside tire in the air like that? No. But, the first order of business is to get the chassis balance right for the car and driver on the course that they will be driving on.

The more understeer a driver likes the worse this tire in the air problem will be. If the chassis balance feels good to the driver and the car behaves the way the driver likes, you can't just alter the chassis balance to reduce or eliminate the tire in the air problem.

With a 911, the best way to reduce this effect is to add more grip at the rear by going to a wider tire. I would go to a 245/45 tire at the rear this will allow you stiffen the rear some without changing the overall chassis balance.
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Scott Winders
PCA GT3 #3
2021 & 2022 PCA GT3 National Champion
2021 & 2022 PCA West Coast Series GT3 Champion
Old 07-22-2016, 11:45 PM
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