I'm gonna order the telstar 15 by 8 rims for the back and the 15 by 4's up front and was wondering what size tires fit each of those...i'm gonna put MT DR on the back and want a real beefy tire size. but i also plan on lowering the car with springs in the future so it cant be way too big..also what size tire fits the 15 by 4's cuz i just dont understand the three numbers for tire sizes. pretty newbish i know. thanks!