315/45R22 Tire Size Specifications & Compatible Vehicles
Overall Diameter
842.3 mm
Section Width
315 mm
Sidewall Height
141.8 mm
Circumference
2646.2 mm
Revs/Mile
608
Rim Diameter
22"
Inch Equivalent
33.2x12.4R22
Rim Width (ETRTO)
10.0" – 12.5"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 315/45R22 and may be used as replacements:
Popular Comparisons
See how 315/45R22 compares to other common tire sizes:
Understanding 315/45R22
The tire size 315/45R22 means the tire has a section width of 315mm, an aspect ratio of 45% (the sidewall height is 45% of the width), and fits a 22-inch rim.
Sidewall Height = 315 x 0.45 = 141.8 mm
Overall Diameter = (141.8 x 2) + (22 x 25.4) = 842.3 mm
Circumference = 842.3 x π = 2646.2 mm
Overall Diameter = (141.8 x 2) + (22 x 25.4) = 842.3 mm
Circumference = 842.3 x π = 2646.2 mm
Frequently Asked Questions
The 315/45R22 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 315/45R22 tire has an overall diameter of 842.3mm (33.2 inches). The sidewall height is 141.8mm, and the total circumference is 2646mm.
For 315/45R22 tires, the ETRTO recommended rim width is 11.0". The acceptable range is 10.0" minimum to 12.5" 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 315/45R22 842.3mm diameter. Compatible alternatives include 335/50R20, 305/55R20, 205/75R21. Use our Tire Size Calculator to compare any two sizes.