Technical disc thickness

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Technical disc thickness

If they are the Ø: 257 mm ones then they start at 20mm... so if they are I would suggest you are measuring the out lip and not the actual disc thinkness
 
If they are the Ø: 257 mm ones then they start at 20mm... so if they are I would suggest you are measuring the out lip and not the actual disc thinkness

there is a bit of a lip but i measured about 10-15mm in from the edge and the discs have been on the car for about 30k .
i'll go and recheck maybe i read the micrometer wrong
 
Wow, thats good. The book says 20mm on new discs. I replaced a set after 82k that were averaging 17.5mm
 
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