Bike M-check

One method of checking the preparedness of a bike is an 'M-check'.  So called because it forms the shape of an M starting at the front hub, travelling up to the handlebars, down to the bottom bracket, up to the saddle and back down to the rear hub. .

The below list gives a more complete list of areas to examine when performing the M-check.

Front Wheel:

• Axle nuts/quick release – tight / firmly closed.

• Spokes all present and tight.

• Brakes – secure and working, aligned and not rubbing against tyres.

• Lights/reflectors – if fitted, then tight and working.

• Tyre – check for wear, cuts and splits in the tread, and that the tyre is inflated to the correct pressure.

• Bearings – grip rim and rock back and forth to feel for loose bearings.

• Spin to check for tight bearings and poor alignment or buckled wheels.

Handlebars:

• Headset/handlebar tight with no side-side play.

• Brakes levers/gear shifters working correctly.

Chain Ring:

• Front derailleur – working correctly with smooth changes. Wires not frayed.

• Cranks – spinning freely with no side-side play.

• Pedals – fitted correctly, and free from debris. Also check cleats are clean and not worn.

• Chain – check it is well oiled and not rusty.

Saddle:

• Fitted tight, facing in the correct direction and set at the correct angle for the athlete.

• Free from rust, damage, cracks.

• Tightly secure (seat post clamp).

Rear Wheel:

• As per front wheel +

• Rear derailleur – working correctly with smooth changes.