View Single Post
  #1192  
Old 08-19-2012, 03:35 PM
PropellerHead's Avatar
PropellerHead PropellerHead is offline
Member
 
Join Date: Dec 2006
Location: At the wheel of a Bimmer
Posts: 2,273
PropellerHead is on a distinguished road
Quote:
Originally Posted by DTMdan View Post
Painted my calipers/hubs (black)... started raining by the time I got to the rear passenger side so I'll do that one another day.

I also removed the cover piece to the back of the brake cooling ducts on the inside of the wheel well liner (front). Why would they have that closed off?
Customers want that instant-on feel when they hit the brakes no matter what is going on. Those same customers will likely never get their rotors hot enough to benefit from the added cooling.

You might find (as I did on my 3.0) that the ducts allow water as well as air to get onto the rotors. The result is just a touch delay (not much at all) in inclement weather while the pad clears the water from the rotor. Also, cool rotors are not always the best surface to use while braking. In very cold weather without much braking (an infrequent braking highway cruise for example), the rotors can cool below optimum temperature for the most effective initial bite. As above, they heat up in a nanosecond, but also as above, it answers your inquiry as to why they might be blocked.
__________________
Reply With Quote

Sponsored Links