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Discussion Starter · #1 ·
2003 Cooper S.
Reviewing old posts on here I found:

Front: Nominal = 22.0mm. Min = 20.4mm.
Rear: Nominal = 10.0mm. Min = 8.4mm.

But I found 2 differing interpretations on what this means. Can anyone tell me whether A) or B) below is correct?

A) Discs should never be allowed to wear below the minimum thickness at any time.
B) When changing pads as long as discs are above min thickness this is OK. i.e. Discs may wear below min thickness during life of pads until next pad change.

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