30.5" tall, 9.6" wide, 7.2" sidewall
A 245/75R16 tire is 30.5 inches (774 mm) tall and 9.6 inches wide. The sidewall is 75% of the width, 7.2 inches, on a 16-inch wheel, and the tire turns about 662 times per mile.
In flotation terms that is about 30.5x9.6R16. People often call it a 30-inch tire.
The size most often compared with it is 255/70R16, which is 0.4" shorter (−1.4%). At an indicated 60 mph you would be doing 59.2 mph on it.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 16" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 245/75R16 | |
|---|---|---|---|---|---|
| 265/70R16 | 30.6" | 10.4" | 7.3" | +0.5% | |
| 255/70R16 | 30.1" | 10.0" | 7.0" | −1.4% | compare |
| 225/85R16 | 31.1" | 8.9" | 7.5" | +1.9% | |
| 235/75R16 | 29.9" | 9.3" | 6.9" | −1.9% | |
| 255/75R16 | 31.1" | 10.0" | 7.5" | +1.9% | |
| 265/65R16 | 29.6" | 10.4" | 6.8" | −3.0% | |
| 245/70R16 | 29.5" | 9.6" | 6.8" | −3.2% | compare |
| 245/80R16 | 31.4" | 9.6" | 7.7" | +3.2% | |
| 225/75R16 | 29.3" | 8.9" | 6.6" | −3.9% | compare |
| 265/75R16 | 31.6" | 10.4" | 7.8" | +3.9% | compare |
Sizes within 2% of 30.5" on 17" or 18" or 15" wheels.
| Size | Diameter | Width | Sidewall | vs 245/75R16 | |
|---|---|---|---|---|---|
| 285/60R17 | 30.5" | 11.2" | 6.7" | −0.0% | |
| 245/70R17 | 30.5" | 9.6" | 6.8" | +0.1% | |
| 245/65R18 | 30.5" | 9.6" | 6.3" | +0.2% | |
| 265/65R17 | 30.6" | 10.4" | 6.8" | +0.3% | |
| 325/60R15 | 30.4" | 12.8" | 7.7" | −0.4% | |
| 285/55R18 | 30.3" | 11.2" | 6.2" | −0.4% |
Actual speed when the speedometer is calibrated for 245/75R16.
| Speedometer shows | on 255/70R16 | on 215/85R16 | on 235/85R16 |
|---|---|---|---|
| 30 mph | 29.6 mph | 29.9 mph | 31.2 mph |
| 45 mph | 44.4 mph | 44.9 mph | 46.9 mph |
| 60 mph | 59.2 mph | 59.8 mph | 62.5 mph |
| 70 mph | 69.1 mph | 69.8 mph | 72.9 mph |
30.5 inches (774 mm). The sidewall is 7.2 inches.
9.6 inches (245 mm) section width, measured sidewall to sidewall.
About 30.5x9.6R16.
255/70R16 is −1.4% in diameter, within the common 3% guideline. It is 0.4" wider.