I have topped my car out a couple of times... mostly over the Howard Franklin. Did it once on the Howard Franklin racing this kid I know with a 93 Civic hatch with a Integra LS motor and tranny... and right before his computer stopped him, We were going about 140-145 area, and I had a bumper on him... and I got a S1 tranny too! (thanks to that chip, eliminated my fuel cut off and rev limiter) Yokohama AVS ES-100's hold up quite well at those speeds