Why an aluminium rim ages
Aluminium fatigues. Every braking, every impact, every spoke tension micro-stresses the material. On a rim-brake wheel, it's worse: the brake track thins progressively.
The 4 warning signs
- Brake-track wear indicator (dot or hole disappearing)
- Visible cracks at spoke holes
- Wheel won't stay true
- Sidewall bulging outward (barrel effect)




