255/45R16 tire size
255/45R16 in inches: 25.04" overall diameter — 10.04" wide, 4.52" sidewall.
Overall diameter 25.04 in 635.9 mm
Section width 10.04 in 255 mm
Sidewall height 4.52 in 114.75 mm
Revs / mile 806 speedo calibration
Full dimensions
| Measurement | Metric | Imperial |
|---|---|---|
| Overall diameter | 635.9 mm | 25.04 in |
| Section width | 255 mm | 10.04 in |
| Sidewall height | 114.75 mm | 4.52 in |
| Rim diameter | 406.4 mm | 16 in |
| Circumference | 1997.7 mm | 78.65 in |
| Revolutions per mile | 805.6 | |
| Aspect ratio | 45% | |
Compare 255/45R16 to similar sizes
Frequently asked questions
What is the overall diameter of a 255/45R16 tire?
A 255/45R16 tire has an overall diameter of 25.04 inches (635.9 mm).
How tall is a 255/45R16 tire?
The sidewall height is 114.75 mm (4.52 inches), and the overall diameter from the ground to the top of the tire is 25.04 inches.
How many revolutions per mile does a 255/45R16 tire make?
A 255/45R16 tire makes approximately 806 revolutions per mile. Your speedometer is calibrated to this number.
What rim size does a 255/45R16 tire fit?
A 255/45R16 tire is designed for a 16-inch rim (406.4 mm).
All dimensions calculated using standard ETRTO formulas. Always confirm fitment with your vehicle's door-placard and a qualified tire professional before purchasing.