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Automotive glossary

Tyre Repair Kit (Sealant Kit)

A tyre repair kit uses a sealant and a compressor to temporarily fix small tread punctures.

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What is Tyre Repair Kit (Sealant Kit)?

It is supplied in many cars instead of a spare wheel. It does not work for sidewall damage or large holes. The sealant has an expiry date. Kits work best on holes up to about 4 to 6 mm in the tread. Some compressors can also inflate tyres and sports balls. Replace the sealant bottle after use or when it expires. Leave the object in the tyre if possible to avoid a bigger leak.

How it works

Sealant is pumped into the tyre and plugs the hole as the tyre rotates.

Why it matters for your car

Drive carefully to a tyre shop and tell them sealant was used. Sealant may damage TPMS sensors in some cases.

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