Reinforced Sidewall Technology
Run flat tyres feature reinforced sidewalls made from thicker, heat-resistant rubber compounds. If the tyre loses pressure from a puncture, these stiff sidewalls support the vehicle's weight and maintain the tyre's shape, allowing you to continue driving.
Most run flat tyres enable you to drive approximately 50 miles at up to 50 mph after a puncture — enough to reach home, work, or a tyre fitting service.
Benefits and Limitations
The main benefit is eliminating the need for a spare tyre, saving boot space and weight. You avoid the dangerous roadside tyre change, particularly on motorways or in poor weather.
However, run flat tyres are typically more expensive, offer a firmer ride due to their stiff sidewalls, and cannot be repaired after driving while deflated. They must also be used with a tyre pressure monitoring system (TPMS) to alert you of pressure loss.
Vehicles Using Run Flat Tyres
Run flat tyres are standard equipment on many BMW, Mini, Mercedes, and Audi models. If your vehicle originally came with run flats, it is strongly recommended to replace them with the same type, as the suspension and TPMS are calibrated accordingly.
When replacing run flat tyres, a mobile fitting service can come to your location and install them without you needing to drive to a garage on a damaged tyre.
