Originally Posted by
WhyFi
I swapped one recently, a Shimano IceTech, Ultegra-level, 160mm jobber. I think that it had about 16,000 - 18,000 miles on it. This was, again, on the rear, which I tend to wear out more quickly than the front.
Just goes to show the individual nature of it. I just replaced the front rotor on my gravel bike after 10k miles -- it was measuring less than 1.5mm thick with my caliper. Rear rotor is still at 1.6mm or so.