The Westlake SL309 tire comes in LT285/75R16. It has a Load Index of 122/119 which means the tire is rated to hold up to 3307 lbs. The tire has a Speed Rating of Q so it is rated to go up to 99 mph. The Westlake SL309 is made for Light Trucks, CUVs and SUVs. It has a Load Range of D, which is also known as 8 Ply. This is maximum safe carrying capacity of the tire. A higher Load Range allows the tire to carry a heavier load. The tire comes in a Black Side Wall.

The SL309 is formulated with s Silica Tech compound that enhances traction on wet or dry road surfaces while simultaneously minimizing rolling resistance to improve fuel economy. This compound forms into an M+S rated tread that bolster wet grip. A group of four, circumferential grooves work with lateral grooves to channel water away from the tire and combat hydroplaning risks. This tire features variable pitch tread blocks that minimize road noise to improve ride quality. Internally, the SL309 is reinforced with twin steel belts that provide extra durability for a long lasting ride.