The rear brake power is fine. It only does it when stamping on the pedal, which you'd only ever do in a straight line, which when done on purpose is a giggle! It stops seriously well anyway, only need to touch the pedal.. I know it sounds dangerous, but if you stamped on your brakes when cornering you'll probably crash anyway! I had the toyos on for 5 days before they hit the track, and they still looked brand new on the day. Within 1 hour they were scrubbed to bits and prob worn halfway!! First go on track though, loadsa squeeling and cornering too fast etc so maybe last longer if I'd have driven better.. I still really rate them for on road though.