265/55R20 Tire Size Specifications & Compatible Vehicles
Overall Diameter
799.5 mm
Section Width
265 mm
Sidewall Height
145.8 mm
Circumference
2511.7 mm
Revs/Mile
641
Rim Diameter
20"
Inch Equivalent
31.5x10.4R20
Rim Width (ETRTO)
7.5" – 10.0"
Compatible Vehicles
The following vehicles use 265/55R20 tires from the factory:
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 265/55R20 and may be used as replacements:
Understanding 265/55R20
The tire size 265/55R20 means the tire has a section width of 265mm, an aspect ratio of 55% (the sidewall height is 55% of the width), and fits a 20-inch rim.
Sidewall Height = 265 x 0.55 = 145.8 mm
Overall Diameter = (145.8 x 2) + (20 x 25.4) = 799.5 mm
Circumference = 799.5 x π = 2511.7 mm
Overall Diameter = (145.8 x 2) + (20 x 25.4) = 799.5 mm
Circumference = 799.5 x π = 2511.7 mm
Frequently Asked Questions
The 265/55R20 tire size is used on 6 vehicle trims including the 2025 Toyota 4Runner, 2024 Toyota 4Runner, 2023 Toyota 4Runner and 3 more.
A 265/55R20 tire has an overall diameter of 799.5mm (31.5 inches). The sidewall height is 145.8mm, and the total circumference is 2512mm.
For 265/55R20 tires, the ETRTO recommended rim width is 9.0". The acceptable range is 7.5" minimum to 10.0" maximum. Using a rim outside this range can cause improper bead seating and unsafe handling.
Yes, as long as the replacement tire overall diameter is within 3% of the 265/55R20 799.5mm diameter. Compatible alternatives include 185/65R22, 285/60R18, 205/65R21. Use our Tire Size Calculator to compare any two sizes.