345/40R22 Tire Size Specifications & Compatible Vehicles
Overall Diameter
834.8 mm
Section Width
345 mm
Sidewall Height
138.0 mm
Circumference
2622.6 mm
Revs/Mile
614
Rim Diameter
22"
Inch Equivalent
32.9x13.6R22
Rim Width (ETRTO)
11.0" – 13.5"
Alternative Tire Sizes
These tire sizes are within 3% overall diameter of 345/40R22 and may be used as replacements:
Understanding 345/40R22
The tire size 345/40R22 means the tire has a section width of 345mm, an aspect ratio of 40% (the sidewall height is 40% of the width), and fits a 22-inch rim.
Sidewall Height = 345 x 0.4 = 138.0 mm
Overall Diameter = (138.0 x 2) + (22 x 25.4) = 834.8 mm
Circumference = 834.8 x π = 2622.6 mm
Overall Diameter = (138.0 x 2) + (22 x 25.4) = 834.8 mm
Circumference = 834.8 x π = 2622.6 mm
Frequently Asked Questions
The 345/40R22 is a standard tire size. Check your vehicle door jamb sticker or owner manual to confirm compatibility.
A 345/40R22 tire has an overall diameter of 834.8mm (32.9 inches). The sidewall height is 138.0mm, and the total circumference is 2623mm.
For 345/40R22 tires, the ETRTO recommended rim width is 12.0". The acceptable range is 11.0" minimum to 13.5" 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 345/40R22 834.8mm diameter. Compatible alternatives include 335/45R21, 215/70R21, 275/50R22. Use our Tire Size Calculator to compare any two sizes.