185/55R15 tire size
185/55R15 in inches: 23.01" overall diameter — 7.28" wide, 4.01" sidewall.
Overall diameter 23.01 in 584.5 mm
Section width 7.28 in 185 mm
Sidewall height 4.01 in 101.75 mm
Revs / mile 876 speedo calibration
Full dimensions
| Measurement | Metric | Imperial |
|---|---|---|
| Overall diameter | 584.5 mm | 23.01 in |
| Section width | 185 mm | 7.28 in |
| Sidewall height | 101.75 mm | 4.01 in |
| Rim diameter | 381 mm | 15 in |
| Circumference | 1836.3 mm | 72.29 in |
| Revolutions per mile | 876.4 | |
| Aspect ratio | 55% | |
Compare 185/55R15 to similar sizes
Frequently asked questions
What is the overall diameter of a 185/55R15 tire?
A 185/55R15 tire has an overall diameter of 23.01 inches (584.5 mm).
How tall is a 185/55R15 tire?
The sidewall height is 101.75 mm (4.01 inches), and the overall diameter from the ground to the top of the tire is 23.01 inches.
How many revolutions per mile does a 185/55R15 tire make?
A 185/55R15 tire makes approximately 876 revolutions per mile. Your speedometer is calibrated to this number.
What rim size does a 185/55R15 tire fit?
A 185/55R15 tire is designed for a 15-inch rim (381 mm).
All dimensions calculated using standard ETRTO formulas. Always confirm fitment with your vehicle's door-placard and a qualified tire professional before purchasing.