Tyres
Inspect
is smooth and even.
Check for broken or loose spokes.
Tread
cuts and damage.
Valves
Frequency: Inspect and maintain after every use.
Maintenance
"Fixing a Flat Tire" for more detail.
Reduce air pressure in the tube and re-seat the bead.
bearings need repairing,contact a mechanic.
See mechanic for repair.
Replace tyre
Clean dirt from the valve.
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