What Causes the Squeaking Noise at the Rear of a Scooter?

1 Answers
OMaverick
07/30/25 2:04am
Here are the reasons for the squeaking noise at the rear of a scooter: 1. Piston issue in the lower caliper: If the piston is stuck, it may prevent the brake pads from fully separating from the disc, leading to squeaking due to friction. The piston can be disassembled and cleaned. 2. Worn brake pads: If the brake pads are worn (including uneven wear, which could also be caused by the aforementioned piston issue), and the friction surface edges expose metal, it will produce a squeaking sound when rubbing against the disc. 3. Uneven disc surface: If the disc shows obvious concentric groove marks and is no longer a smooth friction surface, these marks indicate uneven wear on the brake pads.
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