285/40R22 Tire Size Specifications & Compatible Vehicles
Overall Diameter
786.8 mm
Section Width
285 mm
Sidewall Height
114.0 mm
Circumference
2471.8 mm
Revs/Mile
651
Rim Diameter
22"
Inch Equivalent
31x11.2R22
Rim Width (ETRTO)
8.5" – 11.0"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 285/40R22 and may be used as replacements:
Understanding 285/40R22
The tire size 285/40R22 means the tire has a section width of 285mm, an aspect ratio of 40% (the sidewall height is 40% of the width), and fits a 22-inch rim.
Sidewall Height = 285 x 0.4 = 114.0 mm
Overall Diameter = (114.0 x 2) + (22 x 25.4) = 786.8 mm
Circumference = 786.8 x π = 2471.8 mm
Overall Diameter = (114.0 x 2) + (22 x 25.4) = 786.8 mm
Circumference = 786.8 x π = 2471.8 mm
Frequently Asked Questions
The 285/40R22 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 285/40R22 tire has an overall diameter of 786.8mm (31.0 inches). The sidewall height is 114.0mm, and the total circumference is 2472mm.
For 285/40R22 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 285/40R22 786.8mm diameter. Compatible alternatives include 195/65R21, 175/65R22, 325/35R22. Use our Tire Size Calculator to compare any two sizes.