285/60R20 Tire Size Specifications & Compatible Vehicles
Overall Diameter
850.0 mm
Section Width
285 mm
Sidewall Height
171.0 mm
Circumference
2670.4 mm
Revs/Mile
603
Rim Diameter
20"
Inch Equivalent
33.5x11.2R20
Rim Width (ETRTO)
8.5" – 11.0"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 285/60R20 and may be used as replacements:
Popular Comparisons
See how 285/60R20 compares to other common tire sizes:
Understanding 285/60R20
The tire size 285/60R20 means the tire has a section width of 285mm, an aspect ratio of 60% (the sidewall height is 60% of the width), and fits a 20-inch rim.
Sidewall Height = 285 x 0.6 = 171.0 mm
Overall Diameter = (171.0 x 2) + (20 x 25.4) = 850.0 mm
Circumference = 850.0 x π = 2670.4 mm
Overall Diameter = (171.0 x 2) + (20 x 25.4) = 850.0 mm
Circumference = 850.0 x π = 2670.4 mm
Frequently Asked Questions
The 285/60R20 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 285/60R20 tire has an overall diameter of 850.0mm (33.5 inches). The sidewall height is 171.0mm, and the total circumference is 2670mm.
For 285/60R20 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 285/60R20 850.0mm diameter. Compatible alternatives include 245/75R19, 265/55R22, 245/80R18. Use our Tire Size Calculator to compare any two sizes.