305/40R22 tire size
305/40R22 in inches: 31.61" overall diameter — 12.01" wide, 4.80" sidewall.
Overall diameter 31.61 in 802.8 mm
Section width 12.01 in 305 mm
Sidewall height 4.80 in 122 mm
Revs / mile 638 speedo calibration
Full dimensions
| Measurement | Metric | Imperial |
|---|---|---|
| Overall diameter | 802.8 mm | 31.61 in |
| Section width | 305 mm | 12.01 in |
| Sidewall height | 122 mm | 4.80 in |
| Rim diameter | 558.8 mm | 22 in |
| Circumference | 2522.1 mm | 99.29 in |
| Revolutions per mile | 638.1 | |
| Aspect ratio | 40% | |
Compare 305/40R22 to similar sizes
Frequently asked questions
What is the overall diameter of a 305/40R22 tire?
A 305/40R22 tire has an overall diameter of 31.61 inches (802.8 mm).
How tall is a 305/40R22 tire?
The sidewall height is 122 mm (4.80 inches), and the overall diameter from the ground to the top of the tire is 31.61 inches.
How many revolutions per mile does a 305/40R22 tire make?
A 305/40R22 tire makes approximately 638 revolutions per mile. Your speedometer is calibrated to this number.
What rim size does a 305/40R22 tire fit?
A 305/40R22 tire is designed for a 22-inch rim (558.8 mm).
All dimensions calculated using standard ETRTO formulas. Always confirm fitment with your vehicle's door-placard and a qualified tire professional before purchasing.