Brake disc sometimes touching brake pad when not braking I have a Whistle B-Race 7.1 e-bike that's about 3 months old. Recently the front disc brake has started touching the brake pads when not braking, when it does you can hear a "zing" sound. It does so during hard turns or when i'm riding without hands on the handlebar, but when i try to willingly reproduce the problem, i can't, for some reason. It is not constant, it happens in short intervals. I tried removing and putting back the front wheel, making sure that everything is aligned, but nothing has changed. The front tyre is slightly crooked, i think i messed up changing it when i got a puncture, but thats just the rubber, not the rim. Could that be the problem?

So, after quite a long time i managed to solve the issue.

After a close inspection i saw that the external brake pads was really, and i mean _really_ close to the brake rotor, so close that when braking the rotor was actually deforming (i don't know if that's normal). I guess that when cornering the brake rotor and pad were actually touching, maybe there is a bit o play in the QR system or something.

After a bit of fiddling i managed to get the two brake pads the same distance from the rotor, moving the calipers a bit to the right.

I tried riding quite hard down a trail and the problem was gone.

**NB: Many guides suggest that you loosen the caliper screws, brake hard and while braking re-tighten the screws so that the calipers are centered. This did not work for me, i had to center them manually and keep them in place while tightening the screws.**