WESTLAKE SL309 RADIAL A/P The WESTLAKE SL309s all-season light truck tire was developed for anyone who works hard for a living. Designed for vans, pickups, SUVs, as well as commercial light truck applications, these tires combine all-season traction and heavy-duty load range capabilities. The SL309s deliver a smooth quiet ride along with traction in dry, wet and wintry conditions. Get a set of tires that work as hard as you doget WESTLAKE SL309s.