Oxidising alu? My old Mavics looked a bit like this.
Run your finger over the rim (ooh nurse!) braking surface and feel for concaves (worn braking surface might indicate potential weakness) or run your finger over the rim near the spoke - notice any bumps?
Oxidising alu? My old Mavics looked a bit like this.
Run your finger over the rim (ooh nurse!) braking surface and feel for concaves (worn braking surface might indicate potential weakness) or run your finger over the rim near the spoke - notice any bumps?