✓The SSR's (Run Flat Tyre) reinforced sidewall enables the car to continue on its way at a maximum speed of 80 km/h (50 mph) for up to 80 km (50 miles), depending on road conditions and vehicle weight. [Unlike conventional tires, the SSR principle is based on a reinforced self-supporting sidewall. This prevents the inside of the tire from getting pinched between the road and the rim and from slipping into the rim well in the event of a loss of inflation.