1. If your brake is rubbing, first check that the calliper is aligned with the rotor. Loosen the calliper bolts just enough to allow you to move it from side to side. Spin the wheel, then adjust the position of the calliper by hand until it no longer rubs, or only rubs at one point of the rotor. 2. Rotor still rubbing at one point? It’ll need straightening. If it’s the back wheel that’s a 3. Spin the wheel and listen out for a rubbing sound. Stop the wheel at the point where the rotor contacts the pads. Look down through the calliper to see which pad the rotor is touching. If it’s the right pad you’ll need to bend the rotor left, and vice versa. 4. Note which part of the rotor is rubbing, then rotate the wheel until the bent section is free of the calliper. With a rotor truing tool, adjustable spanner or clean hands, pull the rotor a few millimetres in the opposite direction to the pad it was touching. 5. Rotate the bent section of rotor back into the calliper and l...