Car Tyres
Run-flat tyres
Many car makers are now fitting run-flat tyres as original equipment – these have either a reinforced sidewall or additional internal structure to provide partial support to the tyre in a deflated condition.
Ride quality on a deflated run-flat tyre will be very similar to normal so the driver may not be able to tell that a puncture has happened, particularly if driving on the motorway. For this reason run-flat tyres will always be fitted together with a tyre pressure monitoring system (TPMS).
Refer to the vehicle handbook for restrictions on use following a puncture – deflated tyres should be capable of at least 50 miles at speeds up to 50 mph and should be renewed or repaired as soon as possible after a puncture.
Worn or damaged, run-flat tyres should be replaced by the same make of run-flat tyre. In some cases the TPMS will need to be reset after the fitting of a new tyre.