Originally Posted by
WhyFi
In general, if the spring clip isn't rubbing the rotor, I'm fine with it, but Shimano does have a min thickness spec out there - should be easy enough to find.
With most disc brakes, it’s easy enough to just find a good angle and view the pads without even removing them… and, as you note, if the spring clip isn’t sticking out above the pad, they’re fine.