In Reply to: E30 M3 Brake Upgrade posted by Pottsy on June 25, 2002 at 19:18:57:
1) only use a premium brake fluid, ie. Motul 600,Ap racing, Castrol SRF if you have boiling problems.
2) unless you are running big power (260 +) you should not have any problems w/ brakes unless you are in the south during the 100 degree summer days.
3) BRake cooling is a big help on these cars unless you run HAwk HT-10 pads which seem to like heat and cooling isn't necessary.
4) BMW club racers use stock brakes & rotors for prepared class cars all the time and they do not have the problems you speak of very often. I have had great success w/ stock brakes at tracks like Watkins Glen for two days straight without fading them out.
5) consider how you brake. ie. are you just bombing into the corner and shoving your foot through the floor boards to get the car to slow down? Consider braking a little earlier and squeezing the brakes on rather than slamming them hard.
If you are boiling fluid regularly I would reccomend you keep a set of wheel bearings handy. Your gonna need 'em soon.
Finally, how do all those good J-stock racers make the stock brakes work and still turn very quick times during a 30 min sorint race? HHHMMMMM?