185/45R17 tire size
185/45R17 in inches: 23.56" overall diameter — 7.28" wide, 3.28" sidewall.
Overall diameter 23.56 in 598.3 mm
Section width 7.28 in 185 mm
Sidewall height 3.28 in 83.25 mm
Revs / mile 856 speedo calibration
Full dimensions
| Measurement | Metric | Imperial |
|---|---|---|
| Overall diameter | 598.3 mm | 23.56 in |
| Section width | 185 mm | 7.28 in |
| Sidewall height | 83.25 mm | 3.28 in |
| Rim diameter | 431.8 mm | 17 in |
| Circumference | 1879.6 mm | 74.00 in |
| Revolutions per mile | 856.2 | |
| Aspect ratio | 45% | |
Compare 185/45R17 to similar sizes
Frequently asked questions
What is the overall diameter of a 185/45R17 tire?
A 185/45R17 tire has an overall diameter of 23.56 inches (598.3 mm).
How tall is a 185/45R17 tire?
The sidewall height is 83.25 mm (3.28 inches), and the overall diameter from the ground to the top of the tire is 23.56 inches.
How many revolutions per mile does a 185/45R17 tire make?
A 185/45R17 tire makes approximately 856 revolutions per mile. Your speedometer is calibrated to this number.
What rim size does a 185/45R17 tire fit?
A 185/45R17 tire is designed for a 17-inch rim (431.8 mm).
All dimensions calculated using standard ETRTO formulas. Always confirm fitment with your vehicle's door-placard and a qualified tire professional before purchasing.