Does anyone happen to know the thickness of brand new ultegra rotors? (the road specific ones with the fins). I picked up a used set off a friend and he said he only put 260mi on it.. but when I measured the thickness they "look" like they're at the minimum thickness of 1.5mm. I'd like to get an idea of the original thickness before I make any decisions moving forward. If someone even has a pair on with low miles that could measure, that would be awesome.
I don’t have any, but minimum is minimum. What ever your friend says, if they are at the minimum thickness it’s time to get some new ones. I would say even 1,5mm is way to thin, considering that even new, stock rotors can have issues with warping due to heat.