supercar tyres don't have steel belts they only have the string stuff (i don't know thw proper name for it) and under braking the tyres flatten out and the whole tyre touches the road and around corners the tyre tries to peel itself off the rim and the whole tyre touches we run around 5-6 degrees on our au supercar, and irokin they are a handful to turn in just need to use the kerbs to get the weight off the inside rear tyre or our FPR BF with $40 000 sachs shocks has enough grip to do it without hitting kerbs. so on the street i wouldnt want anymore then 2 degrees neg.