31.7" tall, 11.2" wide, 7.9" sidewall
A 285/70R16 tire is 31.7 inches (805 mm) tall and 11.2 inches wide. The sidewall is 70% of the width, 7.9 inches, on a 16-inch wheel, and the tire turns about 636 times per mile.
In flotation terms that is about 31.7x11.2R16. People often call it a 32-inch tire.
The size most often compared with it is 265/75R16, which is 0.1" shorter (−0.2%). At an indicated 60 mph you would be doing 59.9 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 285/70R16 | |
|---|---|---|---|---|---|
| 265/75R16 | 31.6" | 10.4" | 7.8" | −0.2% | compare |
| 275/75R16 | 32.2" | 10.8" | 8.1" | +1.7% | |
| 295/70R16 | 32.3" | 11.6" | 8.1" | +1.7% | |
| 275/70R16 | 31.2" | 10.8" | 7.6" | −1.7% | |
| 265/80R16 | 32.7" | 10.4" | 8.3" | +3.1% | |
| 265/70R16 | 30.6" | 10.4" | 7.3" | −3.5% | |
| 305/70R16 | 32.8" | 12.0" | 8.4" | +3.5% | |
| 285/65R16 | 30.6" | 11.2" | 7.3" | −3.5% | |
| 285/75R16 | 32.8" | 11.2" | 8.4" | +3.5% | compare |
| 275/80R16 | 33.3" | 10.8" | 8.7" | +5.1% |
Sizes within 2% of 31.7" on 17" or 15" or 18" wheels.
| Size | Diameter | Width | Sidewall | vs 285/70R16 | |
|---|---|---|---|---|---|
| 235/80R17 | 31.8" | 9.3" | 7.4" | +0.3% | |
| 265/70R17 | 31.6" | 10.4" | 7.3" | −0.3% | |
| 305/70R15 | 31.8" | 12.0" | 8.4" | +0.3% | |
| 285/65R17 | 31.6" | 11.2" | 7.3" | −0.4% | |
| 285/75R15 | 31.8" | 11.2" | 8.4" | +0.4% | |
| 265/65R18 | 31.6" | 10.4" | 6.8" | −0.5% |
Actual speed when the speedometer is calibrated for 285/70R16.
| Speedometer shows | on 265/75R16 | on 285/75R16 | on 275/75R16 |
|---|---|---|---|
| 30 mph | 29.9 mph | 31.1 mph | 30.5 mph |
| 45 mph | 44.9 mph | 46.6 mph | 45.8 mph |
| 60 mph | 59.9 mph | 62.1 mph | 61.0 mph |
| 70 mph | 69.9 mph | 72.5 mph | 71.2 mph |
31.7 inches (805 mm). The sidewall is 7.9 inches.
11.2 inches (285 mm) section width, measured sidewall to sidewall.
About 31.7x11.2R16.
265/75R16 is −0.2% in diameter, within the common 3% guideline. It is 0.8" narrower.