305/45R15 tire size
305/45R15 in inches: 25.81" overall diameter — 12.01" wide, 5.40" sidewall.
Overall diameter 25.81 in 655.5 mm
Section width 12.01 in 305 mm
Sidewall height 5.40 in 137.25 mm
Revs / mile 782 speedo calibration
Full dimensions
| Measurement | Metric | Imperial |
|---|---|---|
| Overall diameter | 655.5 mm | 25.81 in |
| Section width | 305 mm | 12.01 in |
| Sidewall height | 137.25 mm | 5.40 in |
| Rim diameter | 381 mm | 15 in |
| Circumference | 2059.3 mm | 81.08 in |
| Revolutions per mile | 781.5 | |
| Aspect ratio | 45% | |
Compare 305/45R15 to similar sizes
Frequently asked questions
What is the overall diameter of a 305/45R15 tire?
A 305/45R15 tire has an overall diameter of 25.81 inches (655.5 mm).
How tall is a 305/45R15 tire?
The sidewall height is 137.25 mm (5.40 inches), and the overall diameter from the ground to the top of the tire is 25.81 inches.
How many revolutions per mile does a 305/45R15 tire make?
A 305/45R15 tire makes approximately 782 revolutions per mile. Your speedometer is calibrated to this number.
What rim size does a 305/45R15 tire fit?
A 305/45R15 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.