255/70R18 tires are in stock across 37 options from 17 brands, spanning highway, all-terrain and touring designs for full-size SUVs and light trucks. Every order ships free, with Affirm financing available and fast delivery from a nationwide network. Prices run from $161.77 to $348.00 per tire, so there is a fit for both budget-minded shoppers and drivers wanting a premium name.
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What 255/70R18 tires means
The code breaks down into exact measurements. The 255 is the section width in millimeters (about 10.04 inches across the widest part of the tread). The 70 is the aspect ratio, meaning the sidewall height equals 70% of that width — roughly 178.5 mm (7.03 inches) tall. The R means radial construction, and the 18 is the wheel diameter in inches.
Stacking those numbers gives an overall tire diameter of about 32.06 inches, and the tire turns roughly 629 revolutions per mile. Those figures matter because they determine how much clearance you need in the wheel well, how your speedometer and odometer read, and how tall the sidewall is for ride comfort. Staying close to this diameter keeps your speed readings accurate; a taller sidewall like the 7-inch one here helps absorb bumps and adds a cushion against rim damage on rough roads.
Vehicles & uses
This is a common SUV, Jeep and light-truck size. Retailers list 255/70R18 as a fitment for full-size SUVs, crossovers and light trucks, with both all-season and all-terrain choices offered. Its tall sidewall and mid-width footprint suit vehicles that mix daily highway miles with occasional gravel, snow or light off-road use. Always confirm the size, load rating and speed rating specified on your door placard before buying.
Brands & options in 255/70R18 tires
Premium and touring picks include the Continental TerrainContact A/T, the Hankook Dynapro HT2 RH14, and the Dynapro AT2 Xtreme RF12 for drivers wanting a big-name highway or all-terrain tire.
For rugged and performance-oriented use, look at Falken's Wildpeak A/T4W, the General Grabber A/TX, the Grabber A/T Sport-W, and the Hercules Terra Trac AT X-Journey. The General Grabber H/T covers highway duty.
Value-focused options come from Ironman with the RB SUV and All Country AT-X, plus Laufenn's X FIT HT LD01 and X FIT AT2 LC02. Additional choices include Kumho, Toyo, Nitto, Nexen, Nokian, GT Radial, Advanta, Arroyo and Kenda. Browse every fitment on the all tires hub.
How to choose
Season
All-season tires balance year-round grip and are the most common pick in this size. All-terrain designs add off-road traction and tougher construction. If you face regular snow and ice, a dedicated winter tire delivers the best cold-weather bite.
Treadwear & UTQG
The UTQG rating lists treadwear, traction and temperature grades stamped on the sidewall. A higher treadwear number generally signals a longer-lasting compound, though it can trade off some grip. Check each tire's rating on its product page.
Load index & speed rating
Match or exceed the load index and speed rating your vehicle requires. Many 255/70R18 tires carry a 113 load index; confirm the exact rating and any XL designation for your setup before ordering.
Warranty
Mileage warranties vary by model, so compare the coverage listed on each tire alongside its price to weigh long-term value.
Frequently Asked Questions
What does 255/70R18 mean? It describes a radial tire with a 255 mm section width (about 10.04 inches), a sidewall height equal to 70% of that width (about 7.03 inches), mounted on an 18-inch wheel, for an overall diameter near 32.06 inches and roughly 629 revolutions per mile.
How much do 255/70R18 tires cost? Prices currently range from $161.77 to $348.00 per tire, depending on brand, design and features.
What vehicles use 255/70R18 tires? This size is commonly listed for full-size SUVs, crossovers, Jeeps and light trucks. Always verify against your vehicle's door placard.