Bridgestone run-flat tyres OE on top marques

Alongside the introduction of the Run-Flat version of its flagship Potenza S001 UHP sport tyre, Bridgestone announced a run of OE fitments on some of the best known marques. Available in 4 40 to 55 series sizes, Bridgestone Run-Flat Tyres are now fitted right across the BMW and Mini range in Europe, in addition to a large number of models from Audi, Mercedes, Lexus and Volkswagen. Many top sports cars are also equipped with Bridgestone Run-Flats, including Ferrari and Maserati models.

Bridgestone reports that its run-flat tyres, enable drives to continue for up to 80 km at up to 80 km/h with zero air pressure. Bridgestone’s latest generation of Run-Flat Tyres also provides a level of ride comfort that is reportedly comparable to conventional tyres. Considering the criticisms of the first generation of run-flat tyre technology, this is a significant step forward.

According to the company, this has been made possible by the development of “heat controlling” technologies – including a NanoPro-Tech polymer which reduces internal friction heat and innovative Cooling Fin technology that keeps the sidewall cool – enabling Bridgestone engineers to reduce the vertical stiffness of the run-flat sidewall. These technologies are not both applied systematically to all tyre sizes; their use depends on the tyre aspect ratio and preference of individual vehicle manufacturers.

“Bridgestone Run-Flat Tyres have now achieved a balance of performance and comfort that is comparable to standard tyres” says Franco Annunziato, chief quality officer and senior vice president technology, Bridgestone Europe. “This opens the way for expanding the use of Run-Flat Tyres with mainstream motorists.”