The Trail Grappler® M/T blends some of the off-road performance of the Mud Grappler® with the on-road comfort of the Terra Grappler® to create a tire that is both aggressive and quiet. For off-road performance, the 3-ply sidewall and thick rubber construction increase puncture resistance. On the tread surface, the blocks provide additional biting edges that command lateral stability and enhance forward traction. For on-road comfort, Nitto’s engineers used advanced sound analysis equipment to reduce noise levels commonly associated with off-road tires.
Z Groove provides lateral stability and mud traction.
Stone ejectors aid in tread protection, stone rejection and mud clearing.
Deep center sipes help resist hydroplaning and increases traction in wet conditions.
3D tapered grooves add additional biting edges for off-road performance.
The balanced void ratio efficiently removes mud and dirt from the tread to provide continuous off-road traction.
Reinforced shoulder grooves add additional off-road and all-season performance without comprimising block stiffness.
Advanced sound analysis equipment was used to systematically reduce the noises normally heard when driving on off-road tires. The result is a tire 34% quieter at city speeds and 36% quieter at highway speeds.*
The 3-ply sidewall with a high turn-up construction acts as an extra layer of reinforcement to increase puncture resistance.
Nitto’s proprietary, automated manufacturing system produces extraordinarily uniform tires. This creates a smooth ride on paved roads.
Each Trail Grappler M/T has two sidewall designs so you can pick which one faces the road. One side has stylized lettering with V-shaped buttresses and the other has traditional lettering with flat buttresses.
Notes - Important
Not available for shipment to Canada!
LT tires with a "C" load range have a 6-ply rating.
LT tires with a "D" load range have an 8-ply rating.
LT tires with an "E" load range have a 10-ply rating.
Max Load (lbs)
Approved Rim Width (in)
Measuring Rim (in)
Overall Diameter (in)
Overall Width (in)
Tread Depth (1/32)
In the Box
(1) 37x12.50R-20LT, Trail Grappler M/T
Mounts to 20-inch wheels
ALWAYS read all product page details for more important fitment information
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If you place your order before 4:30pm (CST), Monday-Friday, your order will be shipped that day. Parts ordered must be in stock for the order to ship. Approximately 98% of all orders placed leave our warehouses the same day (not including weekends & holidays). Even with our huge inventory, we may run out of an item. If this is the case you will receive an email with an expected availability date. Once an order has shipped, average UPS Ground transit time is an additional 1 to 3 working days.