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post #14 of (permalink) Old 05-03-2019, 01:46 PM
Michael Smith
Registered User
Join Date: Sep 2007
Location: Calgary,Alberta,Canada
Posts: 2,698
Brakes are heat generators, that's all they do. Kinetic energy is converted to heat.

Drilling brakes (or casting them with holes) reduces the capability of the disc to absorb heat, so they get hotter, faster.

Hotter brakes are more efficient at dissipating heat. That's not always a good thing. For road driving it's a very bad thing.

The issue is with achieving the optimal operating range for the pad material.

Pick your pads to match your driving requirement. Your discs don't matter very much. What matters is using pads that will brake effectively over the temperature range you expect the car to experience. Same for tires.

Carbon ceramics brakes on any road car are just a fashion statement. Like very large wheels, almost all spoilers and often those very expensive tires.

1991 Alfa Romeo 164L 5 spd
White on grey leather 230K km, owned from new
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