305/50R20 tire size
305/50R20 in inches: 32.01" overall diameter — 12.01" wide, 6.00" sidewall.
Overall diameter 32.01 in 813 mm
Section width 12.01 in 305 mm
Sidewall height 6.00 in 152.5 mm
Revs / mile 630 speedo calibration
Full dimensions
| Measurement | Metric | Imperial |
|---|---|---|
| Overall diameter | 813 mm | 32.01 in |
| Section width | 305 mm | 12.01 in |
| Sidewall height | 152.5 mm | 6.00 in |
| Rim diameter | 508 mm | 20 in |
| Circumference | 2554.1 mm | 100.56 in |
| Revolutions per mile | 630.1 | |
| Aspect ratio | 50% | |
Compare 305/50R20 to similar sizes
Frequently asked questions
What is the overall diameter of a 305/50R20 tire?
A 305/50R20 tire has an overall diameter of 32.01 inches (813 mm).
How tall is a 305/50R20 tire?
The sidewall height is 152.5 mm (6.00 inches), and the overall diameter from the ground to the top of the tire is 32.01 inches.
How many revolutions per mile does a 305/50R20 tire make?
A 305/50R20 tire makes approximately 630 revolutions per mile. Your speedometer is calibrated to this number.
What rim size does a 305/50R20 tire fit?
A 305/50R20 tire is designed for a 20-inch rim (508 mm).
All dimensions calculated using standard ETRTO formulas. Always confirm fitment with your vehicle's door-placard and a qualified tire professional before purchasing.