275 40 R19 Goodyear Excellence ROF 101Y SL Tyre Runflat Original Equipment (O.E.) self-supporting run-flat summer tires are an appropriate tyre choice for sporty vehicles. Developed for use on new cars and light trucks, these tyres offer temporary extended mobility in the event a puncture allows complete pressure loss, as well as provide a sporty blend of ride quality, noise comfort, and handling, along with dry and wet traction. Goodyear RunOnFlat (ROF) tyres incorporate special sidewall reinforcements that support the weight of the vehicle even after sustaining air pressure losses that would render conventional tyres immobile. While internal tyre damage will likely make replacement necessary, ROF tyres are designed to endure being run on while flat for up to 50 miles at speeds up to 50 mph and provide drivers the temporary extended mobility necessary to drive through stormy weather and away from dangerous situations.