I've had no problem in the alps with the stock dustboots, but all day heavy track use obviously can be different. Depends also on the track obviously. Especially high speed braking requires a lot of energy dissipation (kinetic energy is square multiplied with speed). I'm not a real track junkie.
You can go with silicone boots; you can get them fairly cheap on ebay (these are OE stoptech seals, same size is used on 997 6 piston brembo calipers):
http://www.ebay.com/itm/28mm-32mm-36mm-FULL-Stoptech-Brembo-Front-Brake-Caliper-Rebuild-Kit-for-BMW-135i-/281423796275
But they may be not so rugged as the stock ones. Silicone rubber tears easily.
If you build an all out track car you're best of with no seals, but that requires regular full piston rebuilds, so that's a lot of work, and expensive, or you'll risk massive leakeage.
Maybe changing the pistons with different material can lenghten dustboot life. The conduction of heat will play a role.
You can go with silicone boots; you can get them fairly cheap on ebay (these are OE stoptech seals, same size is used on 997 6 piston brembo calipers):
http://www.ebay.com/itm/28mm-32mm-36mm-FULL-Stoptech-Brembo-Front-Brake-Caliper-Rebuild-Kit-for-BMW-135i-/281423796275
But they may be not so rugged as the stock ones. Silicone rubber tears easily.
If you build an all out track car you're best of with no seals, but that requires regular full piston rebuilds, so that's a lot of work, and expensive, or you'll risk massive leakeage.
Maybe changing the pistons with different material can lenghten dustboot life. The conduction of heat will play a role.
