Waste of money? No. Brake upgrades are never a bad thing.
Check the brake pad on that wheel. It may be worn down enough to gouge the rotor. Look for damage to the pad also. If something did actually manage to get between the pad and rotor the pad may be compromised.
Check the brake pad on that wheel. It may be worn down enough to gouge the rotor. Look for damage to the pad also. If something did actually manage to get between the pad and rotor the pad may be compromised.