for the non readers the mopar magazine guys that put one 1/2 of a viper set of brakes first stopped the car from 30 mph because they were afraid the superior viper brakes would steer the car off the road--it stopped straight--at 30 mph they hit the brakes hard (not skidding the tires) and it stopped straight---they upped it to 60 mph and braked again and it stopped straight---up to 60 mph again hitting the brakes hard (not skidding)and it stopped straight---the moral of the story is if you are building a road race car or just drive like a 16 yr old with his first car the viper brakes may hold up better to repeated hard braking--but no one realy knows