Describe the shape of the damage
Explain whether you can see a shallow surface mark, an open cut or a raised bubble. A pronounced outward bulge can indicate structural damage. Some inward sidewall indentations can be features of construction, but this distinction should not be guessed from a hurried glance or an online comparison picture.
If unsure, ask for a tyre specialist's assessment. A photo may help the enquiry, although it cannot confirm the condition of the tyre's structure or its inner sidewall.
Tell the fitter about an impact
Mention a recent kerb contact, pothole or other impact, even if the mark appeared afterwards. Say whether there has been pressure loss, vibration or a change in the way the car feels. These are observations to share, rather than a diagnosis of what has failed.
The wheel may also need to be considered. A tyre replacement does not automatically establish that every part affected by an impact is sound, so ask which checks are included and whether another workshop assessment is needed.
Expect an inspection, and allow for replacement
Sidewall damage should not be treated as an ordinary small tread repair. The professional needs to decide the appropriate action; structural damage may require replacement. Do not apply an external patch, glue or a plug to disguise a cut or bulge.
Supply the complete tyre specification when asking for help, including run-flat or extra-load markings where present. If front and rear tyres differ, identify the affected wheel so the correct replacement enquiry can be made.
Arrange help where the car is safely stopped
Do not drive to a more convenient meeting point on a visibly damaged tyre. Give the team the actual location and describe any immediate traffic danger first. Mobile work still requires a suitable working area; a narrow roadside position may need a different assistance plan before fitting can happen.
Before you book
- Describe a cut, scrape, inward mark or outward bulge.
- Mention impacts, pressure loss and changed handling.
- Send the full tyre size and the affected wheel position.
- Provide the actual pin and any roadside safety concern.
Your tyres, taken care of.
Tell us where you’ve safely stopped and what your vehicle needs. We’ll check availability and confirm your quote and arrival estimate.
Your questions, answered.
Can a bulging tyre be safe because it still holds air?
Holding air does not prove that the tyre's structure is sound. An outward bulge needs urgent professional assessment, rather than a decision based only on the pressure reading.
Can you confirm a sidewall repair from a photograph?
No. A photograph helps explain the enquiry, but the fitter must inspect the damage and decide whether replacement or another appropriate step is required.
Useful sources
For further information, explore these sources.