Motor Vehicle Expert
MOT tyre guide

Car Fails MOT on Tyres

If your car fails its MOT on tyres, the cause is usually low tread depth, sidewall damage, incorrect tyre condition or unsafe wear. Tyre failures are common and often quick to fix.

Quick answer Common reasons

Quick answer

Many tyre MOT failures are caused by tread below the legal minimum, cuts, bulges, exposed cords or serious uneven wear.

Replacing tyres before the test is often the fastest solution.

Common reasons a car fails MOT on tyres

Low tread

Below legal minimum depth.

Bulges

Internal sidewall damage.

Cuts

Unsafe casing damage.

Exposed cords

Immediate replacement needed.

Uneven wear

Often alignment or suspension related.

Wrong tyre type

Unsuitable or mismatched fitment.

Likely UK replacement costs

  • 1Budget tyres: lower cost
  • 2Mid-range tyres: moderate cost
  • 3Premium tyres: higher cost
  • 4Large wheels usually cost more
  • 5Alignment may be worth adding

How to avoid tyre MOT failure

Check tread regularly, inspect sidewalls, maintain correct tyre pressure and rotate or align tyres when wear looks uneven.

Small checks can prevent surprise MOT fails.