I hope you have road hazard coverage on those things, cause they're like $300 a piece new right? Have you used the tire sealant kit that comes with the car? if so, how did it work out? was it the front or rears? if you're not going to use the rears, I may be interested, as i am going to a track event and wouldn't mind to have a cheap pair of rubber to throw on and wear out. wow 5 nails though? that's crazy, do you drive in construction areas? you did say you got a new set of 4 tires right?