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How thin do you let rotors wear?

1K views 3 replies 4 participants last post by  Mondoman1 
#1 ·
Just wondering how thin you guys let your rotors wear before you swap them out? These are several year old Magura Louise rotors that have seen a lot of use in pretty foul weather.

Magura lists their rotors as 2mm thick, but these were clearly 1.8mm (measured at the tines) - maybe their early ones were 1.8mm. The brake surfaces measure 1.2mm now. I figure they would probably still work fine down to 1mm, but I'm not sure I'd go below that.
 
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