32.4" tall, 9.6" wide, 8.2" sidewall
A 245/85R16 tire is 32.4 inches (823 mm) tall and 9.6 inches wide. The sidewall is 85% of the width, 8.2 inches, on a 16-inch wheel, and the tire turns about 623 times per mile.
In flotation terms that is about 32.4x9.6R16. People often call it a 32-inch tire.
The size most often compared with it is 265/80R16, which is 0.3" taller (+0.9%). At an indicated 60 mph you would be doing 60.5 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 245/85R16 | |
|---|---|---|---|---|---|
| 265/80R16 | 32.7" | 10.4" | 8.3" | +0.9% | |
| 255/80R16 | 32.1" | 10.0" | 8.0" | −1.0% | |
| 235/85R16 | 31.7" | 9.3" | 7.9" | −2.1% | |
| 255/85R16 | 33.1" | 10.0" | 8.5" | +2.1% | |
| 265/75R16 | 31.6" | 10.4" | 7.8" | −2.3% | |
| 245/80R16 | 31.4" | 9.6" | 7.7" | −3.0% | |
| 265/85R16 | 33.7" | 10.4" | 8.9" | +4.1% | |
| 225/85R16 | 31.1" | 8.9" | 7.5" | −4.1% | |
| 255/75R16 | 31.1" | 10.0" | 7.5" | −4.1% | |
| 245/75R16 | 30.5" | 9.6" | 7.2" | −6.0% |
Sizes within 2% of 32.4" on 18" or 15" or 17" wheels.
| Size | Diameter | Width | Sidewall | vs 245/85R16 | |
|---|---|---|---|---|---|
| 305/60R18 | 32.4" | 12.0" | 7.2" | +0.0% | |
| 295/75R15 | 32.4" | 11.6" | 8.7" | +0.1% | |
| 315/70R15 | 32.4" | 12.4" | 8.7" | −0.1% | |
| 245/80R17 | 32.4" | 9.6" | 7.7" | +0.1% | |
| 245/75R18 | 32.5" | 9.6" | 7.2" | +0.2% | |
| 285/65R18 | 32.6" | 11.2" | 7.3" | +0.6% |
Actual speed when the speedometer is calibrated for 245/85R16.
| Speedometer shows | on 265/80R16 | on 255/80R16 | on 235/85R16 |
|---|---|---|---|
| 30 mph | 30.3 mph | 29.7 mph | 29.4 mph |
| 45 mph | 45.4 mph | 44.5 mph | 44.1 mph |
| 60 mph | 60.5 mph | 59.4 mph | 58.8 mph |
| 70 mph | 70.6 mph | 69.3 mph | 68.6 mph |
32.4 inches (823 mm). The sidewall is 8.2 inches.
9.6 inches (245 mm) section width, measured sidewall to sidewall.
About 32.4x9.6R16.
265/80R16 is +0.9% in diameter, within the common 3% guideline. It is 0.8" wider.