275/55R20 Tire Size Specifications & Compatible Vehicles
Overall Diameter
810.5 mm
Section Width
275 mm
Sidewall Height
151.3 mm
Circumference
2546.3 mm
Revs/Mile
632
Rim Diameter
20"
Inch Equivalent
31.9x10.8R20
Rim Width (ETRTO)
8.5" – 11.0"
Compatible Vehicles
The following vehicles use 275/55R20 tires from the factory:
2020 Ford F-150 Lariat/King Ranch/Platinum 2020 GMC Sierra SLE/Elevation 2020 GMC Sierra SLT/AT4/Denali 2025 Infiniti QX80 Sensory 2025 Ram 1500 Laramie/Longhorn 2024 Ram 1500 Laramie/Longhorn 2023 Ram 1500 Laramie/Longhorn/Limited 2022 Ram 1500 Laramie/Longhorn/Limited 2021 Ram 1500 Laramie/Longhorn/Limited 2020 Ram 1500 Laramie/Longhorn/Limited 2025 Toyota Tundra Limited 2025 Toyota Tundra TRD Pro/1794 2024 Toyota Tundra Limited/1794/TRD Pro 2023 Toyota Tundra Limited/1794/TRD Pro 2022 Toyota Tundra Limited/1794/TRD Pro 2021 Toyota Tundra Limited/1794/TRD Pro 2020 Toyota Tundra Limited/1794/TRD Pro
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 275/55R20 and may be used as replacements:
Popular Comparisons
See how 275/55R20 compares to other common tire sizes:
275/55R20 vs 285/55R20 Large SUV width upgrade 275/55R20 vs 275/60R20 Taller sidewall same width 245/50R20 vs 275/55R20 Large crossover upgrade 255/55R19 vs 275/55R20 Luxury SUV rim upgrade 275/55R20 vs 265/60R18 Rim downsize comparison 265/50R20 vs 275/55R20 Taller sidewall larger width 275/60R20 vs 275/55R20 Profile height comparison 255/60R19 vs 275/55R20 SUV plus-one wider
Understanding 275/55R20
The tire size 275/55R20 means the tire has a section width of 275mm, an aspect ratio of 55% (the sidewall height is 55% of the width), and fits a 20-inch rim.
Sidewall Height = 275 x 0.55 = 151.3 mm
Overall Diameter = (151.3 x 2) + (20 x 25.4) = 810.5 mm
Circumference = 810.5 x π = 2546.3 mm
Overall Diameter = (151.3 x 2) + (20 x 25.4) = 810.5 mm
Circumference = 810.5 x π = 2546.3 mm
Frequently Asked Questions
The 275/55R20 tire size is used on 17 vehicle trims including the 2020 Ford F-150, 2020 GMC Sierra, 2020 GMC Sierra and 14 more.
A 275/55R20 tire has an overall diameter of 810.5mm (31.9 inches). The sidewall height is 151.3mm, and the total circumference is 2546mm.
For 275/55R20 tires, the ETRTO recommended rim width is 9.5". The acceptable range is 8.5" minimum to 11.0" 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 275/55R20 810.5mm diameter. Compatible alternatives include 205/80R19, 315/40R22, 185/75R21. Use our Tire Size Calculator to compare any two sizes.