Westlake tires

Choose Westlake tires by answering two questions in order: is the vehicle a passenger car/CUV or a light truck/SUV, and what is the primary use - everyday touring, performance, highway, all-terrain, mud-terrain, or commercial? The Westlake catalog maps those answers directly to named families.

Passenger car - touring and performance

For everyday passenger use, the choice sits between two branches. The Foray RP218 is a touring all-season tire designed to replace the RP18, with enhancements to all-season performance, ride comfort, and tread life, available in 13 to 19-inch sizes for most passenger cars and CUVs. The RP18 remains available for buyers needing older or smaller fitments in the same touring category. For drivers who want more handling response alongside year-round capability, the SA07 Sport is a performance touring all-season tire developed for sports-minded cars and CUVs, with four wide circumferential grooves, cross-siped tread blocks, and a rigid center rib for lateral stability and responsive handling. For pure summer performance without all-season compromise, the SA37 Sport is an ultra-high-performance summer tire using a silica compound for wet grip and a strong center rib for handling, available in 15 to 21-inch sizes with speed ratings from H to Y. 

Light truck and SUV

The light truck catalog divides into: SU318 H/T for crossover and SUV highway touring, SL309 A/P for light truck all-purpose use, SL369 A/T for all-terrain,  Westlake SL376 M/T Tire for mud-terrain, and SC328 for commercial van applications. The practical first cut is whether the vehicle needs highway-biased comfort (SU318), general-purpose truck utility (SL309), mixed on/off-road traction (SL369), aggressive mud and rock capability (SL376), or commercial load-carrying service (SC328). The SL376 M/T is specifically engineered for high off-road capability with rugged tread blocks, step-down supports for stability, offset shoulder blocks for mud and snow traction, and an aggressive upper sidewall for rock protection.

The correct Westlake choice follows the vehicle type first, then the use-case branch within that type - and in this catalog, the product names make that branch structure explicit.