The Nitto NT420V LT305/55R20 is a luxury truck and SUV radial with a 125/122S service description in Load Range F. Its asymmetric tread uses larger outer blocks for dry cornering and wide grooves to channel water during wet-road driving.
Manufacturer dimensions are 33.23 inches in diameter and 12.44 inches in overall width, using a measuring rim 9.5 inches wide. Approved rim widths are 9 to 11 inches for this 20-inch wheel size. New tread depth is listed at 14.2/32 inch. This LT-metric version uses a 12-ply-rated Load Range F classification for heavier truck applications. Confirm that its capacity meets the actual vehicle requirements.
Maximum single-tire load is 3,640 lb at 80 psi. Before ordering, have a qualified installer confirm wheel compatibility, vehicle load/speed requirements, and steering and suspension clearance. Vehicle-specific fitment requires those checks; select operating inflation using the vehicle placard and applicable load/inflation guidance.