Scottish Elises

I've got corrosion on the inner edge of my rear brake disks. Not on the disks themselves where the brakes are applied, but just inside where they join onto the wheel.

Should I be concerned? Wear and tear? Or is something wrong?

Cheers,
D

They all do that - exposed to the worst of the elements - the only reason it doesn't happen to the rest of the disc is because it's cleaned with the pad.


HTH

Mac

^

What he said - also the rear pads sweep a smaller area than the fronts, so there's a larger bit of the disc that gets rusty. Some aftermarket discs (like EBC turbogrooves, for example) have a zinc passivate coating on them that keeps any unswept area free of rust for a good while (unless you 'Wonder Wheels' them!)

The discs are just cast iron after all - no need to worry.

I think they were painted (or coated) for a while...but obviously cost too much.

Never seen a spot of rust one on my disks

Sanjoy wrote:Never seen a spot of rust one on my disks

Yes, but luckily you drive miss Daisy, or they would go bang!

Cheers guys. Advice much appreciated!

D

ive bought some rust curer to change the unsightly orange colour to black.

Great thing is it is a chemical bond to the rust. paint would never last but this will