The Nitto Trail Grappler M/T 37x12.50R17LT pairs a mud-terrain tread with an arrangement designed to reduce noise on paved roads. This load-range D version carries a 124Q service description for a 17-inch wheel.
Published dimensions are 36.85 inches in diameter and 13.43 inches in inflated width on a measuring rim 10 inches wide; approved wheel widths run from 8 to 10.5 inches. New tread depth is listed at 21/32 inch. Reinforced three-ply sidewalls support the design on this size. Two sidewall appearances let you choose between stylized lettering with V-shaped lugs and traditional lettering with flatter buttresses.
The maximum single-tire load is 3,525 lb at 50 psi. Match the size, wheel dimensions, load and speed requirements to your vehicle, then have a qualified installer check steering and suspension clearance. Published dimensions are a planning reference, not a vehicle-specific fitment guarantee; maximum pressure is not the recommended operating pressure.