If you are 1/4 mile drag racing and NOT uprev tuned and have trap speeds 91mph+ with the stock height tires. DO NOT run a SHORT drag radial/street radial you will hit the SPEED LIMITER before you reach the finish line. I'm not tuned and running 255-50-16 (26" tall) M/T DR's and was hitting the speed limiter at 1200ft. I either have to get taller SR's/DR's or get tuned to remove/adjust up the speed limiter before i go back to the track. Before with the DR's i was trapping 90.5mph, with the 07 exhaust they went up to 91.5mph and the S/L kicked in so early i put my stock tires back on.