275/40R20 Tire Size Specifications & Compatible Vehicles
Overall Diameter
728.0 mm
Section Width
275 mm
Sidewall Height
110.0 mm
Circumference
2287.1 mm
Revs/Mile
704
Rim Diameter
20"
Inch Equivalent
28.7x10.8R20
Rim Width (ETRTO)
8.5" – 11.0"
Compatible Vehicles
The following vehicles use 275/40R20 tires from the factory:
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 275/40R20 and may be used as replacements:
Popular Comparisons
See how 275/40R20 compares to other common tire sizes:
Understanding 275/40R20
The tire size 275/40R20 means the tire has a section width of 275mm, an aspect ratio of 40% (the sidewall height is 40% of the width), and fits a 20-inch rim.
Sidewall Height = 275 x 0.4 = 110.0 mm
Overall Diameter = (110.0 x 2) + (20 x 25.4) = 728.0 mm
Circumference = 728.0 x π = 2287.1 mm
Overall Diameter = (110.0 x 2) + (20 x 25.4) = 728.0 mm
Circumference = 728.0 x π = 2287.1 mm
Frequently Asked Questions
The 275/40R20 tire size is used on 9 vehicle trims including the 2024 Chevrolet Camaro, 2023 Chevrolet Camaro, 2022 Chevrolet Camaro and 6 more.
A 275/40R20 tire has an overall diameter of 728.0mm (28.7 inches). The sidewall height is 110.0mm, and the total circumference is 2287mm.
For 275/40R20 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 275/40R20 728.0mm diameter. Compatible alternatives include 175/70R19, 245/50R19, 195/50R21. Use our Tire Size Calculator to compare any two sizes.