Source:  gtplanet.net  

There are a few different reasons heat will affect your braking performance and predictability.  With the right brake setup, heat problems can be avoided in the first place. 

A stock braking system on a street car will perform poorly in race applications, and race vehicles need quality brake systems.  Of the various methods available to improve the performance of a braking system, a majority exist as a way to either increase the amount of heat created or heat dissipated.

The reason to increase heat creation in a braking system is to generate added stopping power.  A braking system works by converting the kinetic energy of a vehicle into heat through friction, so more heat means more friction and stopping power.  The drawback of increasing the heat generating prop...