265/65R18 Tire Size Specifications & Compatible Vehicles

802mm172mmR18265/65R18Width: 265mm (10.4")
Overall Diameter
801.7 mm
Section Width
265 mm
Sidewall Height
172.3 mm
Circumference
2518.6 mm
Revs/Mile
639
Rim Diameter
18"

Compatible Vehicles

The following vehicles use 265/65R18 tires from the factory:

2026 Chevrolet Silverado LT 2026 Ford Explorer Tremor

Alternative Tire Sizes

These tire sizes are within 3% overall diameter of 265/65R18 and may be used as replacements:

265/70R17 Safe  0.1% · same width · -1" rim 265/55R20 Safe  0.3% · same width · +2" rim 285/55R19 Safe  0.7% · +20mm · +1" rim 285/50R20 Safe  1.1% · +20mm · +2" rim 275/55R20 Safe  1.1% · +10mm · +2" rim 255/60R20 Caution  1.5% · -10mm · +2" rim 255/70R18 Caution  1.6% · -10mm · same rim 255/70R17 Caution  1.6% · -10mm · -1" rim 255/65R18 Caution  1.6% · -10mm · same rim 275/65R18 Caution  1.6% · +10mm · same rim 255/55R20 Caution  1.6% · -10mm · +2" rim 275/60R18 Caution  1.8% · +10mm · same rim

Understanding 265/65R18

The tire size 265/65R18 means the tire has a section width of 265mm, an aspect ratio of 65% (the sidewall height is 65% of the width), and fits a 18-inch rim.

Sidewall Height = 265 x 0.65 = 172.3 mm
Overall Diameter = (172.3 x 2) + (18 x 25.4) = 801.7 mm
Circumference = 801.7 x π = 2518.6 mm

With an aspect ratio of 65%, this is a standard-profile tire that balances ride comfort with handling precision. This profile range is the most common for passenger cars, crossovers, and light SUVs.

Choosing Replacement Tires

When replacing 265/65R18 tires, verify the size matches your vehicle's tire placard (typically found on the driver's door jamb or in the owner's manual). The NHTSA Tire Ratings Search tool lets you look up manufacturer load and speed ratings for specific tires.

Key factors beyond size: load index (must meet or exceed the vehicle's requirement), speed rating (must match or exceed the original specification), and seasonal type (all-season, summer, or winter) based on your driving conditions. The U.S. Tire Manufacturers Association recommends replacing all four tires at once, or at minimum in pairs on the same axle.