35.5" tall, 12.8" wide, 5.8" sidewall
A 325/45R24 tire is 35.5 inches (902 mm) tall and 12.8 inches wide. The sidewall is 45% of the width, 5.8 inches, on a 24-inch wheel, and the tire turns about 568 times per mile.
In flotation terms that is about 35.5x12.8R24, closest to the common 35x12.50R24 (35.0"). People often call it a 36-inch tire.
The size most often compared with it is 315/45R24, which is 0.4" shorter (−1.0%). At an indicated 60 mph you would be doing 59.4 mph on it.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 24" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 325/45R24 | |
|---|---|---|---|---|---|
| 315/45R24 | 35.2" | 12.4" | 5.6" | −1.0% | |
| 35x12.50R24 | 35.0" | 12.5" | 5.5" | −1.5% | |
| 305/45R24 | 34.8" | 12.0" | 5.4" | −2.0% | |
| 315/50R24 | 36.4" | 12.4" | 6.2" | +2.5% | |
| 37x13.50R24 | 37.0" | 13.5" | 6.5" | +4.2% | |
| 305/40R24 | 33.6" | 12.0" | 4.8" | −5.4% | |
| 315/35R24 | 32.7" | 12.4" | 4.3" | −8.0% | |
| 305/35R24 | 32.4" | 12.0" | 4.2" | −8.8% |
Sizes within 2% of 35.5" on 22" wheels.
| Size | Diameter | Width | Sidewall | vs 325/45R24 | |
|---|---|---|---|---|---|
| 245/70R22 | 35.5" | 9.6" | 6.8" | −0.0% | |
| 285/60R22 | 35.5" | 11.2" | 6.7" | −0.1% | |
| 305/55R22 | 35.2" | 12.0" | 6.6" | −0.9% | |
| 295/60R22 | 35.9" | 11.6" | 7.0" | +1.2% | |
| 35x12.50R22 | 35.0" | 12.5" | 6.5" | −1.5% | |
| 275/60R22 | 35.0" | 10.8" | 6.5" | −1.5% |
Actual speed when the speedometer is calibrated for 325/45R24.
| Speedometer shows | on 315/45R24 | on 35x12.50R24 | on 305/45R24 |
|---|---|---|---|
| 30 mph | 29.7 mph | 29.6 mph | 29.4 mph |
| 45 mph | 44.6 mph | 44.3 mph | 44.1 mph |
| 60 mph | 59.4 mph | 59.1 mph | 58.8 mph |
| 70 mph | 69.3 mph | 69.0 mph | 68.6 mph |
35.5 inches (902 mm). The sidewall is 5.8 inches.
12.8 inches (325 mm) section width, measured sidewall to sidewall.
About 35.5x12.8R24; the closest common flotation size is 35x12.50R24 at 35.0".
315/45R24 is −1.0% in diameter, within the common 3% guideline. It is 0.4" narrower.