
Make a short timeline of what happened
Write down when the warning or flat tyre was first noticed, whether the vehicle moved afterwards and when the kit was used. Add what you observed next: pressure changed, the warning returned, air still escaped or the tyre remained visibly flat. Describe observations without deciding that the sealant cured the problem.
Keep the affected wheel consistently identified. If another traveller used the kit, ask them for the sequence directly so the enquiry does not rely on a second-hand guess about the product or result.
Save the actual product information
Photograph the accessible container and its label, and keep the supplied instructions with the vehicle documents. Explain whether the product came with the hire car or was obtained separately. Include the compressor or kit details if relevant to what was used.
Michelin describes tyre sealant as a temporary solution and recommends professional assessment because the tyre may also have been damaged while run flat or at low pressure. Do not turn a temporary change in pressure into a plan for the remaining holiday without appropriate advice.
Give the rental company the same account
Contact the provider through the assistance process in your agreement. State the registration, affected wheel and sealant history, then ask what it wants you to do next. Include the product photographs through its requested channel if needed.
If independent assessment or replacement is proposed, obtain the appropriate approval and share any conditions with the tyre team. Keep its case reference alongside the timeline so later calls can refer to the same events rather than restart with different descriptions.
Request assessment using the current car location
Send the parked car pin, complete tyre marking and locking wheel nut key details. Explain the access and nominate the person who can meet the fitter and approve the agreed work. Report any further change before attendance.
Inspection determines the appropriate work; sealant use alone does not provide a repair or replacement decision. Review the proposed total before accepting. Where replacement is confirmed, its quote includes selected tyre supply and the agreed fitting service, with the rental company’s instructions still observed.
Before you book
- Record warning, kit use and subsequent changes.
- Keep the actual product label and instructions.
- Tell the rental provider and save its response.
- Send current car pin, tyre marking and key details.
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.
Does sealant mean the tyre definitely needs replacement?
The tyre needs professional assessment. Explain the product used and the tyre’s history; do not infer repair suitability or replacement solely from the fact sealant was applied.
Should I tell the fitter even if pressure appears normal?
Yes. The product and history are relevant to assessment, and apparent pressure recovery does not explain whether other damage is present.
Useful sources
For further information, explore these sources.

