Originally Posted by
Lombard
Why would a 140mm rotor help the situation?
A smaller diameter rotor means a little more room to wiggle things around before it bumps into the frame. For CX/gravel, a 140mm rotor is probably sufficient for stopping power, but it's kind of a personal preference thing.
The best solution here is to be aware of the issue, and exercise a little more care when removing/installing wheels.