How do I know if my tyres are run flat?
Identifying run flat tyres
Run flat tyres carry a specific marking on the sidewall. Different manufacturers use different codes, so knowing what to look for is helpful.
Run flat sidewall markings
| Marking | Meaning | Used 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 ways to check
- Vehicle handbook — Lists the original tyre specification including any run flat requirement
- No spare wheel — If your car does not have a spare wheel in the boot, it was very likely designed for run flat tyres
- Tyres.co.uk registration search — Our system identifies run flat requirements automatically and flags them in your search results
