A is for AIR  Are the tyres pumped to correct pressure—stamped onto side wall of tyre Adult Bikes: Hybrid Bikes 40-70PSI, Knobbly Mountain Bike tyres: 50-80 PSI Road Bike tyres: 90-110PSI Kids bikes: Little kids 30-40PSI, Pre teens: 40-60PSI Also check the tyres for signs of wear in the tread or crack on the side walls B is for BRAKES Do both brakes stop the bike when applied, yet leave a gap at handlebar Are the brakes allowing the bike wheel to roll freely (not rubbing) C is for CHAIN Is the chain able to spin backwards freely—if not check…