With more and more vehicles coming equipped with run-flat tires from the factory, the tire industry has been working hard to offer drivers a better selection than just the vehicle's Original Equipment. While some buyers will elect to replace their run-flats with non-run-flat tires (for a variety of reasons), most cars are no longer being sold with a spare tire, jack or lug wrenches. Therefore, run-flat tires are the only option for many.
Last fall, we assembled our BMW 3 Series test cars with the latest in run-flat offerings from Bridgestone, Kumho, Michelin and Pirelli. The tires were driven in both wet and dry conditions on our test track, and along our Real World Road Ride route that consists of two-lane roads, four-lane roads, expressways and other roads with a variety of surfaces . Bridgestone has been the primary supplier of run-flat tires as Original Equipment for BMW, Lexus and Mercedes-Benz vehicles, which puts them as the benchmark for all other brands. While the Potenza RE050A I RFT scored well in our test, it was outperformed by the Michelin Pilot Sport PS2 ZP that offers a better level of comfort and wet traction.
If you own a car with run-flat tires and hesitate to run the risk of being stranded with a non-run-flat tire, consider the Michelin Pilot Sport PS2 ZP as a comfortable and great handling tire. For more information on our testing, read "Testing Performance Summer Run-Flat Tires."