i can't believe this. i was at the track practicing. and every time i went out, i noticed my car not performing well. the back end sliding a bit on turns. i'd go back to the pits, change something up, try the car again. then i kinda gave up after 3 or 4 runs. then i looked at my wheels. i was like...hm, i guess i'll buy some new tires. i bought tires, mounted'em, etc. tried the car again, and whoa! planted like it was a cart on a rollercoaster. car was fast, smooth, went in and out of corners soo fast. i can't believe it was just the tires all along...