Bridgestone DriveGuard Run-Flat Radial Tire - 215/55R17 94V Low-Pressure Mobility - A NanoPro-Tech rubber insert reinforces the tire making it capable of supporting the entire weight of the vehicle, even at zero pressure Proprietary &#8220;Cooling Fins&#8221; create airflow around the tire, reducing heat build-up and friction for added low-pressure mobility Long Wear Life - An optimized contact patch (the space where the tire meets the road) distributes weight evenly across the entire surface, allowing for even wear and longevity Comfortable All-Season Ride - Silica and special rubber polymers boost Drive Guard&#8217;s handling in wet conditions An asymmetrical tread pattern goes a step further to channel water out of the way Low-Pressure Mobility - A NanoPro-Tech rubber insert reinforces the tire making it capable of supporting the entire weight of the vehicle, even at zero pressure Proprietary &#8220;Cooling Fins&#8221; create airflow around the tire, reducing heat build-up and friction for added low-pressure mobility Long Wear Life - An optimized contact patch (the space where the tire meets the road) distributes weight evenly across the entire surface, allowing for even wear and longevity Comfortable All-Season Ride - Silica and special rubber polymers boost Drive Guard&#8217;s handling in wet conditions An asymmetrical tread pattern goes a step further to channel water out of the way