Continental ContiSportContact 5 ContiSeal 255/40R21, Summer, High Performance tires.

Features and Benefits: High speed performance; Improved fuel consumption; Summer weather traction; Superb damage resistance; Continental ContiSportContact 5 ContiSeal TiresThe Continental ContiSportContact 5 ContiSeal is a high performance, summer tire made for SUVs and passenger vehicles. This tire utilizes its summer weather compound and ribbed tread pattern to promote a superb performance on dry and wet roads. These tread elements provide a high number of biting edges, firmly gripping the driving surface while at higher speeds. The compound is able to avoid heat build-up across the tread area. The circumferential groove pattern is able to eject water from the footprint, maximizing the surface contact while in motion. This actively resists the risk of hydroplaning on wet roads, offering a safer driving experience. The optimal footprint's constant road contact allows the tire to lower the rolling resistance while in motion. The lighter compound and ideal tread elements ensure a fuel efficient performing ability as they allow the tire to maintain a constant forward motion using less energy. In other words, this lowers the fuel consumption and CO2 emissions throughout the performance, promoting a fuel efficient and environmentally friendly driving experience. The model also comes with Continental's ContiSeal technology which is able to seal 80% of punctures instantly. The tire utilizes a special layer that is able to close up any puncture up to 5 mm in diameter. In this manner, you don't need to change tires or wait for roadside assistance in case a sharp object causes a puncture. It keeps the air inside as it works instantly, even if the object is eliminated afterward. The Continental ContiSportContact 5 ContiSeal's constant surface contact significantly improves the overall handling ability and driving stability of the vehicle. The detailed tread ribs with angled grooves and notch placement provide a high number of biting edges, enhancing the overall maneuvering ability. In this manner, the tire's cornering and braking power is greatly enhanced, allowing the tire to safely perform at high speeds. The driver is able to maintain a phenomenal control over the vehicle all the time. This tire model was manufactured as the original equipment tire of select BMW vehicles. Manufacturers recommend changing tires every 10 years. As long as tires are properly stored before they are sold, the year of their manufacture will not shorten their service life.