36 What and why vented rotors?
Description
This article is from the VW Performance FAQ, by with numerous contributions by Jan Vandenbrande others.
36 What and why vented rotors?
A:Braking converts motion into heat. Heat needs to be
dissipated. The faster you can dissipate heat the better
you can stop, and less fade. Vented rotors essentially
have two parallel "discs" with an airspace in between to
increase cooling. Many of the Kesley-Hayes non-vented
front rotors can be replaced with vented ones and thinner
pads without replacing calipers for a slight gain in
braking power.
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