255/70R18 tires

255/70R18 is the base-truck size of the Toyota Tundra, standard on SR and SR5 trims in the later years of the 2007 to 2021 generation. It is about 32 inches tall and comes in both P-metric and LT versions. Below are real prices for 142 tires in stock, our picks with their size-specific specifications, and the sister size many Tundra owners consider instead.

What 255/70R18 tires cost

Prices are per tire, before mounting and balancing. A set of four in the mid range comes to roughly $628 to $908, and a brand rebate can take another $50 to $110 off, see this month's deals.

See every 255/70R18 tire in stock at SimpleTire

255/70R18 or 275/65R18 on a Tundra

Other Tundra trims of the same generation came on 275/65R18, and the two sizes are almost exactly the same height, about 32.1 inches. The 275 is roughly three quarters of an inch wider, which gives a fuller look in the wheel well and a slightly bigger footprint, and it fits the same 18-inch wheels. Because the diameter does not change, the speedometer stays accurate. The narrower 255 is lighter and usually a little cheaper, and it cuts through slush and deep snow better than a wider tire.

Highway tread for a Tundra that tows

Most Tundras in base trim are work trucks or tow vehicles that stay on pavement. For that use, a highway tire with a long warranty is the best value: quieter, lighter and cooler-running on long hauls with a trailer behind. If you tow near the truck's limit, an LT tire's stiffer sidewall reduces sway; the BFGoodrich pick is a load range D LT tire rated 117/114S in this size. Run it at the pressure the tire maker gives for the load, not the P-metric figure on the door placard.

What the numbers on the sidewall mean

A 255/70R18 tire is 255 millimeters wide, its sidewall is 70 percent of that (about 7.0 inches tall), and it mounts on a 18-inch wheel. That works out to an overall diameter of roughly 32.1 inches. Every replacement has to match all three numbers, and the load index and speed rating on the placard inside the driver's door have to be met or exceeded.

In this size our picks are marked 113T on the Ironman All Country A/T and Sumitomo Encounter HT (2,535 lb per tire, rated to 118 mph) and 117/114S on the BFGoodrich All-Terrain T/A KO3 (2,833 lb per tire as a single, 2,601 lb in a dual fitment, rated to 112 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 A/T, $209.96. The least expensive all-terrain in this size, a standard-load 113T with 13/32 inch of tread and a 460 A B grade. It does not carry the 3PMSF symbol, and we do not rely on its warranty listing, which is inconsistent.

Sumitomo Encounter HT, $191.99. Sumitomo's highway tire for trucks and SUVs, with a five-rib tread designed for even wear and a 60,000-mile warranty. The retailer is not stocking it in 255/70R18 today.

BFGoodrich All-Terrain T/A KO3, $305.99. In this size the BFGoodrich comes as a load range D light-truck tire with a 65 psi maximum, 15/32 inch of tread and the 3PMSF symbol. The choice for a Tundra that tows or works off road.

What 255/70R18 tires cost across the whole range

Of the 189 tires listed in this size, 142 are in stock today. The lowest price is the Dcenti DC66 at $118.96, a 113T tire. The median is $193.46; a third of the tires cost $156.96 or less, and the top five percent start above $291.99. 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 Ironman All Country A/T, our budget pick here at $209.96, is also stocked in 265/65R18 ($231.96), LT265/70R18 ($238.96), 265/70R17 ($197.96) and LT245/70R17 ($153.96). The BFGoodrich All-Terrain T/A KO3, our premium pick here at $305.99, is also stocked in 265/70R16 ($284.99), 33x12.50R20 ($484.99), 35x12.50R20 ($519.99) and 265/65R18 ($321.99). 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.

Of our picks in this size, the BFGoodrich All-Terrain T/A KO3 carries the 3PMSF symbol; the Ironman All Country A/T does not.

Vehicles that came with 255/70R18

• Toyota Tundra (2007-2021, SR/SR5)
• Land Rover Defender 110 (2020-2024, 18 in)

The Sequoia of the same years is listed in manufacturer data on 275/65R18, not this size; check the placard before ordering.

Which type of 255/70R18 tire?

Frequently asked questions

How much do 255/70R18 tires cost?

Expect $119–$157 per tire for a budget brand, $157–$227 for a mid-range tire like the Sumitomo Encounter HT, and $227–$292 for a premium tire like the BFGoodrich All-Terrain T/A KO3. A set of four therefore starts at about $476. Add roughly $15 to $45 per tire for mounting and balancing.

What vehicles use 255/70R18 tires?

255/70R18 is original equipment on Toyota Tundra (2007-2021, SR/SR5) and Land Rover Defender 110 (2020-2024, 18 in), 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 255/70R18 tire?

For most drivers our mid-range pick, the Sumitomo Encounter HT, 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 Ironman All Country A/T is a sound choice.

Can I replace just one or two 255/70R18 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.