32.2" tall, 10.8" wide, 7.6" sidewall
A 275/70R17 tire is 32.2 inches (817 mm) tall and 10.8 inches wide. The sidewall is 70% of the width, 7.6 inches, on a 17-inch wheel, and the tire turns about 627 times per mile.
In flotation terms that is about 32.2x10.8R17. People often call it a 32-inch tire.
The size most often compared with it is 255/80R17, which is 0.9" taller (+2.8%). At an indicated 60 mph you would be doing 61.7 mph on it.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 17" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 275/70R17 | |
|---|---|---|---|---|---|
| 295/65R17 | 32.1" | 11.6" | 7.5" | −0.2% | |
| 255/75R17 | 32.1" | 10.0" | 7.5" | −0.3% | compare |
| 265/75R17 | 32.6" | 10.4" | 7.8" | +1.5% | |
| 265/70R17 | 31.6" | 10.4" | 7.3" | −1.7% | compare |
| 285/70R17 | 32.7" | 11.2" | 7.9" | +1.7% | compare |
| 285/65R17 | 31.6" | 11.2" | 7.3" | −1.8% | |
| 255/80R17 | 33.1" | 10.0" | 8.0" | +2.8% | compare |
| 275/65R17 | 31.1" | 10.8" | 7.0" | −3.4% | |
| 295/70R17 | 33.3" | 11.6" | 8.1" | +3.4% | |
| 255/70R17 | 31.1" | 10.0" | 7.0" | −3.4% |
Sizes within 2% of 32.2" on 18" or 16" or 15" wheels.
| Size | Diameter | Width | Sidewall | vs 275/70R17 | |
|---|---|---|---|---|---|
| 275/65R18 | 32.1" | 10.8" | 7.0" | −0.3% | compare |
| 275/75R16 | 32.2" | 10.8" | 8.1" | +0.3% | |
| 255/85R15 | 32.1" | 10.0" | 8.5" | −0.3% | |
| 255/80R16 | 32.1" | 10.0" | 8.0" | −0.3% | |
| 255/70R18 | 32.1" | 10.0" | 7.0" | −0.3% | |
| 295/70R16 | 32.3" | 11.6" | 8.1" | +0.3% |
Actual speed when the speedometer is calibrated for 275/70R17.
| Speedometer shows | on 255/80R17 | on 285/70R17 | on 255/75R17 |
|---|---|---|---|
| 30 mph | 30.8 mph | 30.5 mph | 29.9 mph |
| 45 mph | 46.3 mph | 45.8 mph | 44.9 mph |
| 60 mph | 61.7 mph | 61.0 mph | 59.8 mph |
| 70 mph | 72.0 mph | 71.2 mph | 69.8 mph |
32.2 inches (817 mm). The sidewall is 7.6 inches.
10.8 inches (275 mm) section width, measured sidewall to sidewall.
About 32.2x10.8R17.
255/80R17 is +2.8% in diameter, within the common 3% guideline. It is 0.8" narrower.