Last weekend I drove at Barber with Rezoom Motorsports HDPE. I've been tracking my 2013 Brembo GT for over seven years now; it has a fresh motor with 2018 manifold and L&M cams, Cortex Racing Koni 500# coilovers and 250# springs in rear. For the first time I installed my Apex ET52 EC7 18 x 11 wheels and 305 Pirelli DH slicks. The extra width and grip was awesome; however in turn 5 (tight off camber U-turn) I smoked the rear tires trying to accelerate earlier. I thought it was tire spin but I see rub marks on the insides of both rear slicks. I tried a 3/16" spacer on both sides but it didn't seem to help. Is it simply the rear axle moving on the panhard bar? Any solutions?
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