In 1999, Goodyear unveiled the G397 LHS steer tire. This year, Goodyear is offering the G372 LHD drive tire to complete its tractor system. This tandem is the first line-haul tractor system using Goodyear's Enhanced Casing Design. A polyamide belt in the casing acts as a barrier between the tire's tread and high-tensile steel belts, stopping moisture before it can reach the belts. That effectively eliminates the need for buzzouts and increases carcass life and retreadability.