31x10.50R15 tires

31x10.50R15 is the tire that made the 15-inch wheel last on trucks long after the factories moved on. Toyota fitted it to the 4x4 Tacoma from 1995 to 2000 and to the four-wheel-drive 4Runner of the early nineties, and Chevrolet used it on the S-10 ZR2. Owners of Wrangler TJs, early Broncos and CJ-7s buy it as the classic step up. Below are real prices for 121 tires in stock, three picks from mud-terrain to all-terrain, and what the load range on these tires means for an older truck.

What 31x10.50R15 tires cost

Prices are per tire, before mounting and balancing. A set of four in the mid range comes to roughly $592 to $708, and a brand rebate can take another $50 to $110 off, see this month's deals.

See every 31x10.50R15 tire in stock at SimpleTire

A 31-inch tire on a 15-inch wheel

The format is simple: about 31 inches tall, 10.5 inches wide, on a 15-inch wheel, and most rims between 7 and 9 inches wide accept it. On a 1995 to 2000 Tacoma 4x4 or a 1990 to 1995 4Runner it is the original size, so the speedometer, gearing and spare carrier all expect it. On a Jeep TJ, whose factory tire was a 30x9.50R15 or a 225/75R15, the 31 adds roughly half an inch of ground clearance at the axle and usually fits without a lift, but the wider tread can touch the fender flares at full steering lock on some setups.

The other reason the size survives is the wheel itself. A 15-inch steel wheel is inexpensive, tough and leaves a tall sidewall to flex over rocks, which is why rock crawlers and restorers keep coming back to it.

Load range C: what the letter tells an old-truck owner

Almost every 31x10.50R15 is a light-truck tire with load range C, a six-ply-rated casing. That is lighter than the load range E tires on modern heavy-duty pickups, and it suits these trucks: a compact pickup or a vintage Bronco does not need an E casing, and the softer C rides better at the moderate pressures these vehicles run. The three picks on this page are all marked 109 in this size, so their load capacity is the same; what separates them is tread pattern and speed rating, from Q (99 mph) on the mud-terrain to S on the General.

Run the pressure the tire placard or the tire maker recommends for your axle weight, not the maximum molded on the sidewall. Too much pressure in a C tire on a light truck shrinks the footprint and costs grip on dirt and wet pavement.

What the numbers on the sidewall mean

31x10.50R15 is a flotation size, the format used on larger truck tires: the first number is the overall diameter in inches (nominally 31 inches, a little less once mounted and loaded), the second is the section width in inches (10.50) and the last is the wheel diameter, 15 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 109Q on the Westlake SL376 M/T (2,271 lb per tire, rated to 99 mph), 109S on the General Grabber A/T X (2,271 lb per tire, rated to 112 mph) and 109R on the BFGoodrich All-Terrain T/A KO3 (2,271 lb per tire, rated to 106 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.

Westlake SL376 M/T, $128.94. The budget pick is a mud-terrain, not an all-terrain, so think of it as a trail tire that can drive to the trail. The retailer lists no mileage warranty for it, and the tread is deep and open, which cleans out well in mud but hums on the highway. For a weekend truck or a TJ that lives on dirt it is an inexpensive way into the size. Four of them come to $515.76 before mounting.

General Grabber A/T X, $228.99. General's all-terrain carries the three-peak mountain snowflake symbol and can be studded where studs are legal, which makes it the pick for a truck that sees real winter. The retailer's spec lists a 60,000-mile warranty for the line, while tiresize.com shows 50,000 miles in this LT size, so read the warranty terms on the listing before you count on the higher figure.

BFGoodrich All-Terrain T/A KO3, $257.99. The newest version of the tire most people picture when they say all-terrain. In 31x10.50R15 it is a load range C, 109R tire with the 3PMSF symbol and a 50,000-mile tread life warranty. The R speed rating, 106 mph, is plenty for any truck that runs this size. It costs $29 more per tire than the General.

What 31x10.50R15 tires cost across the whole range

Of the 186 tires listed in this size, 121 are in stock today. The lowest price is the Summit Trail Climber HT II at $120.08, a 109S tire. The median is $160.96; a third of the tires cost $147.99 or less, and the top five percent start above $244.99. 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 General Grabber A/T X, our mid-range pick here at $228.99, is also stocked in 33x12.50R15 ($263.96) and 275/70R18 ($284.99). The BFGoodrich All-Terrain T/A KO3, our premium pick here at $257.99, is also stocked in 33x12.50R17 ($385.99), 30x9.50R15 ($242.99), 265/70R16 ($284.99) and LT285/75R16 ($315.99). 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.

Our pick the BFGoodrich All-Terrain T/A KO3 carries the 3PMSF symbol.

Vehicles that came with or commonly run 31x10.50R15

• Toyota Tacoma 4x4 (1995-2000)
• Chevrolet S-10 ZR2 (1994-2004)
• Jeep Wrangler TJ (1997-2006, popular upsize)
• Toyota 4Runner (1990-1995, 4x4)
• Ford Bronco (1966-1977, common upsize)
• Jeep CJ-7 (1976-1986, common upsize)
• Chevrolet K5 Blazer (1973-1991, common upsize)
• Toyota Land Cruiser FJ40 (1960-1984, common fit)

Several of the vintage models listed left the factory on smaller bias-ply or 15-inch radial sizes and take a 31 as an upsize; check fender and steering clearance before you order.

Which type of 31x10.50R15 tire?

Frequently asked questions

How much do 31x10.50R15 tires cost?

Expect $120–$148 per tire for a budget brand, $148–$177 for a mid-range tire like the General Grabber A/T X, and $177–$245 for a premium tire like the BFGoodrich All-Terrain T/A KO3. A set of four therefore starts at about $480. Add roughly $15 to $45 per tire for mounting and balancing.

What vehicles use 31x10.50R15 tires?

31x10.50R15 is original equipment on Toyota Tacoma 4x4 (1995-2000), Chevrolet S-10 ZR2 (1994-2004), Jeep Wrangler TJ (1997-2006, popular upsize), Toyota 4Runner (1990-1995, 4x4), Ford Bronco (1966-1977, common upsize), Jeep CJ-7 (1976-1986, common upsize), Chevrolet K5 Blazer (1973-1991, common upsize) and Toyota Land Cruiser FJ40 (1960-1984, common fit), 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 31x10.50R15 tire?

For most drivers our mid-range pick, the General Grabber A/T X, 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 BFGoodrich All-Terrain T/A KO3 is worth the extra. On a tight budget the Westlake SL376 M/T is a sound choice.

Can I replace just one or two 31x10.50R15 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.