The 121T Regional Trailer Tire from Yokohama Tire is specifically engineered for trailer use only. The 121T is severe snow service-rated in all weather conditions and is offered in sizes 215/75R17.5 and 235/75R17.5. Its tread pattern and rigid shoulder design are ideal for use in drop-deck and heavy-haul trailer applications. The three-groove tread pattern assures reduced rolling resistance and pattern noise for a quiet, fuel-efficient ride. Serpentine grooves remove water from beneath the tread and maximize traction on wet and snowy roads. Concave lug features provide additional traction under wet or slippery conditions. The ridged shoulder design reduces the chances for shoulder step-down wear and improves straight line stability. The funnel-shaped step grooves prevent stones and debris from reaching the bottom of the groove where casing damage occurs.