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Tyres

How do I know if my tyres are run flat?

Recognising run flat tyres

Run flat tyres have specific markings on the tyre's sidewall. These markings vary by manufacturer, so knowing what to look out for is useful.

Sidewall markings of run flat tyres

MarkingMeaningUsed by
RSC Run flat System Component Bridgestone, BMW
ROF Run On Flat Various manufacturers
SSR Self-Supporting Run flat Continental
ZP Zero Pressure Michelin
RFT Run Flat Tyre Dunlop, Pirelli and others
DSST Dunlop Self-Supporting Technology Dunlop
EMT Extended Mobility Technology Goodyear

Other methods

  • Check vehicle handbook - Vehicle handbooks list the original tyre specifications, including any run flat requirements
  • No spare wheel - If your boot does not have a spare wheel, it was most likely designed for run flat tyres
  • Tyres.co.uk registration search - Our system automatically identifies run flat requirements and highlights them in your search results
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