Rear drilled and grooved discs - opinions

[Niall]

Don't use RC6 as they kill discs and leave metal bits in your paint

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There have been issues with the hispec discs wearing badly and turning into Pringles on hard track use.
A lot depends on the pads, they don't stand up well to the better ones.

Yeah the ones that came with my brakes were like that. Ended up buying new rotors in the end and still have a slight wobble i need to look at today.

Our engineer in work is looking over mine. Not 100% the discs are mounted straight. Bells seem ok.
These are very nearly new as well. Careful buying new discs as Ash made at least two different bells.

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Could be that they are fixed rather than semi floating that's causing it

Ive cured it. Whipped the rotors and bells off and the hub face was quite rusty. Cleaned that and the inside of the bell up lightly with some sand paper and put it all back together. Spot on now!