What tires are the top drivers in SCCA using on stock factory wheels for 13-14 gt500, any information will be greatly appreciated. I run my goodyears on road courses and I am happy with them once they warm up but on auto cross tracks they never get up to temp. even in 100 degree weather. Last year I ran MSSP 275 40 19 and 295 35 20 on auto x tracks and they were much better than the GY'S, I'm just wondering if there is anything out there better. THANKS in advance !!!!!