37x12.50R20 tires
Prices, best picks and current deals for 37x12.50R20, a common size on pickup trucks. It fits the Ford F-250 Tremor, Ram 2500 Power Wagon, Ford F-150 Raptor and more.
What 37x12.50R20 tires cost
Ironman All Country M/T
Lowest price that still brakes and wears acceptably. Fine for a second car or low annual mileage.
Listed as Ironman All Country M/T-X 37x12.50R20 128Q Mud Terrain Off-Road Light Truck Tires
Toyo Open Country A/T III
The value sweet spot: long mileage warranty, solid wet grip, sane price.
Listed as Toyo Open Country A/T III 37x12.50R20 126Q All Terrain Off-Road Light Truck Tires
Nitto Ridge Grappler
The strongest wet and snow braking and the longest tread life among what is stocked in this size. Worth it if you keep the car.
Listed as Nitto Ridge Grappler 37x12.50R20 126Q Rugged Terrain Light Truck Tires
Prices are per tire, before mounting and balancing. A set of four in the mid range comes to roughly $1,228 to $1,968, and a brand rebate can take another $50 to $110 off, see this month's deals.
Cheapest 37x12.50R20 right now
Lionhart Kilima A/T 37x12.50R20 126Q All Terrain Off-Road Light Truck Tires
$240.98per tire $481.96 for 2 tires · $963.92 for 4
84 tires in this size, priced straight from SimpleTire's own product feed, read 13 November 2026. Stock and prices move daily, so check the shop for today's figure.
See every 37x12.50R20 tire in stock at SimpleTire
About the 37x12.50R20 size
37 in on 20 in, LT load range E. Needs 6+ in of lift on most HD trucks; M/T and hybrid patterns dominate.
What the numbers on the sidewall mean
37x12.50R20 is a flotation size, the format used on larger truck tires: the first number is the overall diameter in inches (nominally 37 inches, a little less once mounted and loaded), the second is the section width in inches (12.50) and the last is the wheel diameter, 20 inches. These are LT tires with a load range letter on the sidewall, usually E or F here; a replacement should carry the same letter, because the letter sets the maximum inflation pressure the tire is built for.
In this size our picks are marked 128Q on the Ironman All Country M/T (3,968 lb per tire, rated to 99 mph) and 126Q on the Toyo Open Country A/T III and Nitto Ridge Grappler (3,748 lb per tire, rated to 99 mph). The first number is the load index, the letter the speed rating; a tire with equal or higher values than your placard is fine, a lower one is not.
Our guide on reading a tire size walks through the markings, and this one lists every load index and speed code.
Our three picks, side by side
One tire at each price level from what the retailer stocks in this size, with the mileage warranty and UTQG grades as published by the manufacturers and their retailers. Treadwear is the number to compare: it is a relative wear rate, so 700 should last roughly twice as long as 350 on the same car.
| Ironman All Country M/T | Toyo Open Country A/T III | Nitto Ridge Grappler | |
|---|---|---|---|
| Price per tire (Nov 13, 2026) | $280.96 | $549.06 | $542 |
| Set of four | $1,123.84 | $2,196.24 | $2,168 |
| Service description in 37x12.50R20 | 128Q | 126Q | 126Q |
| Mileage warranty | see listing | 65,000 mi P-metric; 50,000 mi LT and flotation sizes | no mileage warranty; workmanship warranty, pro rata to 2/32" |
| UTQG treadwear / traction / temperature | see listing | see listing | 500 A B (typical, varies by size) |
| Season | see listing | All-terrain | Rugged-terrain |
| Extras | — | — | — |
What 37x12.50R20 tires cost across the whole range
Of the 107 tires listed in this size, 84 are in stock today. The lowest price is the Lionhart Kilima A/T at $240.98, a 126Q tire. The median is $361.94; a third of the tires cost $306.96 or less, and the top five percent start above $584.69. Those are per-tire prices before mounting and balancing, which adds $15 to $45 per tire at most shops, read from the retailer's feed Nov 13, 2026.
The same tires in neighboring sizes
The Ironman All Country M/T, our budget pick here at $280.96, is also stocked in 37x12.50R17 ($315.96), 37x13.50R22 ($416.96), 315/70R17 ($282.96) and 35x12.50R22 ($321.06). The Toyo Open Country A/T III, our mid-range pick here at $549.06, is also stocked in 37x12.50R17 ($435.99), 325/65R18 ($445.68), 315/70R17 ($387.64) and 285/55R20 ($342.98). The Nitto Ridge Grappler, our premium pick here at $542, is also stocked in 37x12.50R17 ($532.99), 325/65R18 ($431), 37x13.50R22 ($636) and 315/70R17 ($392). Useful if your vehicle came with a different wheel package, or if you are comparing an upsize: the same tire usually costs more per inch of wheel, not per inch of rubber. Prices per tire, from the retailer's feed Nov 13, 2026.
Winter on a pickup in this size
Four-wheel-drive pickups satisfy Colorado's Passenger Vehicle Traction Law on the 126 miles of I-70 between Dotsero and Morrison, in force from September 1 to May 31, on the vehicle alone, provided the tires have at least 3/16 inch of tread. A two-wheel-drive truck, still common in work trims, must be on tires marked M+S, 3PMSF or rated all-weather by the manufacturer. Fines start at $130. Nearly every all-terrain tire carries the M+S marking, and the better ones now also carry the 3PMSF symbol, which requires a tested level of snow traction rather than just a tread pattern. An unloaded pickup is light over its rear axle, so on snow the rear tires lose grip first; a few hundred pounds of ballast in the bed over the axle does as much as the tire choice.
Of our picks in this size, the Toyo Open Country A/T III carries the 3PMSF symbol; the Nitto Ridge Grappler does not.
Vehicles that use 37x12.50R20
- Ford F-250 Tremor (2020-2024, lifted)
- Ram 2500 Power Wagon (2014-2024, lifted)
- Ford F-150 Raptor (2017-2020, lifted)
- Chevrolet Silverado 2500HD (2011-2024, lifted)
Other years and wheel packages of the same models came on 37x12.50R17, 35x12.50R18 or LT245/75R16 instead, so read the placard inside the driver's door before you order.
Which type of 37x12.50R20 tire?
All-Terrain Tires
Pickup, Jeep and SUV owners who tow, drive gravel or dirt roads, or need real traction in snow and mud.
Mud-Terrain Tires
Off-road enthusiasts with lifted trucks or Jeeps that see mud, sand and rock regularly.
Highway Truck & SUV Tires
Pickup and SUV owners who commute, haul the family or tow on pavement and want quiet, long tread life and good fuel economy.
Frequently asked questions
How much do 37x12.50R20 tires cost?
Expect $241–$307 per tire for a budget brand, $307–$492 for a mid-range tire like the Toyo Open Country A/T III, and $492–$585 for a premium tire like the Nitto Ridge Grappler. A set of four therefore starts at about $964. Add roughly $15 to $45 per tire for mounting and balancing.
What vehicles use 37x12.50R20 tires?
37x12.50R20 is original equipment on Ford F-250 Tremor (2020-2024, lifted), Ram 2500 Power Wagon (2014-2024, lifted), Ford F-150 Raptor (2017-2020, lifted) and Chevrolet Silverado 2500HD (2011-2024, lifted), among others. Always confirm with the sticker inside your driver's door, because trim levels and wheel packages can change the size.
What is the best 37x12.50R20 tire?
For most drivers our mid-range pick, the Toyo Open Country A/T III, is the sweet spot of price and tread life. If you keep the vehicle a long time or drive in heavy rain and snow, the Nitto Ridge Grappler is worth the extra. On a tight budget the Ironman All Country M/T is a sound choice.
Can I replace just one or two 37x12.50R20 tires?
On a front- or rear-wheel-drive car, yes: replace in pairs on the same axle and put the newer pair on the rear. On all-wheel-drive vehicles most makers want all four replaced together, or a new tire shaved to match, because a difference in circumference strains the drivetrain.