'Scraping' brake discs?

On a damp morning the brakes have started to sound more scrapey that they have in the past on my MINI.

After a bit of driving it gets a bit better but the light corrosion across the disc remains on one of the rear disc only

20,000 miles on clock - about 2000 miles and two months since purchased from a MINI dealer.

Asked on 30 December 2012 by sjw

Answered by Honest John
On a clear, dry stretch of road with no parked cars around and nothing behind you, try braking hard from 40mph a couple of times. If the car stops straight and the surface rust gets cleaned off both rear discs then it's okay.
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