Westlake's SU31 is an all-season tire that's designed for use on CUVs and SUVs and features four wide grooves that drain water from the tread to . Backed by a 50,000 mile limited manufacturer tread life warranty, the SU318 features a computer optimized design that lowers road noises and vibrations to create a quiet, comfortable ride for drivers and passengers plus serrated siping that bites into the road to increase grip in dry, wet, and light winter weather conditions.