Join Date: Jan 2007
Nominated 0 Times in 0 Posts
TOTW/F/M Award(s): 0
Thanked 0 Times in 0 Posts
Originally Posted by Description of overheated disks
If you abuse your brakes, and cause them to overheat, their efficiency will become diminished and you will get a condition that is commonly referred to as brake fade. In extreme cases the brake discs will turn blue in colour, this decolouration being caused by excessive heat that irreversibly changes the molecular structure of the metal, and the surface of the pads will become glazed. The result is they no longer work properly and the whole assembly has to be renewed.
Something else you can get from overheating your brakes that causes brake failure, especially if you have not serviced and maintained them effectively. Brake fluid, lik eall liquids, has a boiling point, as doe water. However, in the case of brake fluid,, that boiling point is at a much higher temperature than that of water, but if it does boil, i twill turn to vapour.
Thanks for the above but the brakes work absolutely fine, the only problem we have is the vibration and the dealer is saying this "may" resolve it. Their reasoning being that the disc is blue so it must have overheated.
I had the brakes apart a couple of weeks ago, cleaned everything up with a wire brush and put copper grease on the back of the pads just to be sure. I checked the disc and other than the usual flakey rust around the edge of the disc it didn't seem warped or anything.
I was just checking to see whether what they had said was right!!
Currently in Fraser1979's garage:
2002 Scenic Fidji 1.9dCi