285/30R20 Tire Size Specifications & Compatible Vehicles
Overall Diameter
679.0 mm
Section Width
285 mm
Sidewall Height
85.5 mm
Circumference
2133.1 mm
Revs/Mile
754
Rim Diameter
20"
Inch Equivalent
26.7x11.2R20
Rim Width (ETRTO)
8.5" – 11.0"
Compatible Vehicles
The following vehicles use 285/30R20 tires from the factory:
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 285/30R20 and may be used as replacements:
Popular Comparisons
See how 285/30R20 compares to other common tire sizes:
Understanding 285/30R20
The tire size 285/30R20 means the tire has a section width of 285mm, an aspect ratio of 30% (the sidewall height is 30% of the width), and fits a 20-inch rim.
Sidewall Height = 285 x 0.3 = 85.5 mm
Overall Diameter = (85.5 x 2) + (20 x 25.4) = 679.0 mm
Circumference = 679.0 x π = 2133.1 mm
Overall Diameter = (85.5 x 2) + (20 x 25.4) = 679.0 mm
Circumference = 679.0 x π = 2133.1 mm
Frequently Asked Questions
The 285/30R20 tire size is used on 5 vehicle trims including the 2024 Chevrolet Camaro, 2023 Chevrolet Camaro, 2022 Chevrolet Camaro and 2 more.
A 285/30R20 tire has an overall diameter of 679.0mm (26.7 inches). The sidewall height is 85.5mm, and the total circumference is 2133mm.
For 285/30R20 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 285/30R20 679.0mm diameter. Compatible alternatives include 185/60R18, 245/40R19, 155/55R20. Use our Tire Size Calculator to compare any two sizes.