Bridgestone America's new FS509 steer tire is engineered with a higher carrying capacity, while combining the proven Firestone tread design and a Bridgestone-engineered casing for increased treadwear and mileage. This truckload tire comes in five sizes (285/75R24.5, 11R24.5, 295/75R22.5, 11R22.5, and 295/75R22.5) and features a shoulder-wear protector to minimize irregular wear as long as stress-releif sipes for more even wear. Additionally, the tire features a continuous shoulder rib for reduced rolling resistance, and is also EPA SmartWay verified and California Air Resources Board compliant.