I have two sets of 17" take-off tires used mostly for autocross. Both sets have life left and would probably last a track day or two, an autocross season, or would be great for drifting. Wear is mostly even on both sets (yay camber). I store my race tires bagged and indoors during the off season. 245/40/17 BFG Rival 1.5S - $120 - 5/32" tread 255/40/17 Bridgestone RE-71R - $100 - 4/32" tread