The M check

A widely used safety check that allows your bike to be safe in five minutes. Follow the strokes of the M to make sure you don't miss anything.

Download M check advice

Get your bike checked by a qualified cycle mechanic if you encounter anything that you are unsure of.

1. Front wheel and Tyre

• Is the wheel nut or quick-release tight?
• Is the wheel central in frame?
• Are there any loose or missing spokes?
• Are the bearings tight?
• Are the rims worn down?
• Check that the tyre tread isn’t worn and inspect for damage and bulges.
• Is there enough air in the tyres? (check the recommended PSI on tyre)

2. Handlebars and brakes

• Is the handlebar aligned with front fork?
• Are all the bolts tightened?
• Do your lights and bell (if fitted) work?
• Do the brakes lock the wheels firmly?
• Are all the components tight?
• Are any of the brake cables frayed?
• Do the brake blocks rub against the wheel rims?
• Do the brake levers touch the handle bar when pulled?
• Can your fingers reach the brake levers easily?

3. Frame, pedals and chain

• Are the forks loose at the point that they enter the frame (the headset)?
• Is there any rust on the frame?
• Does the frame look damaged or bent?
• Are the pedals stable on the cranks?
• Do the pedals spin round easily?
• Moving the cranks into and away from the bike will show if your bottom bracket has any movement.

4. Saddle

• Is the saddle secure on the seat post?
• Does the seat post wobble?
• Is the saddle at the correct height?
• Ensure the seat post isn’t above minimum insertion height indicated on the post.

5. Back wheel and tyre

• Is the wheel nut or quick-release tight?
• Is the wheel central in frame?
• Are there any loose or missing spokes?
• Are the bearings tight?
• Are the rims worn down?
• Check that the tyre tread isn’t worn and inspect for damage and bulges.
• Is there enough air in the tyres? (check the recommended PSI on tyre)