24.6" tall, 10.8" wide, 3.8" sidewall
A 275/35R17 tire is 24.6 inches (624 mm) tall and 10.8 inches wide. The sidewall is 35% of the width, 3.8 inches, on a 17-inch wheel, and the tire turns about 821 times per mile.
In flotation terms that is about 24.6x10.8R17. People often call it a 25-inch tire.
The size most often compared with it is 255/40R17, which is 0.5" taller (+1.8%). At an indicated 60 mph you would be doing 61.1 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 275/35R17 | |
|---|---|---|---|---|---|
| 255/40R17 | 25.0" | 10.0" | 4.0" | +1.8% | |
| 275/40R17 | 25.7" | 10.8" | 4.3" | +4.4% | |
| 285/40R17 | 26.0" | 11.2" | 4.5" | +5.7% | |
| 255/45R17 | 26.0" | 10.0" | 4.5" | +5.9% | |
| 295/40R17 | 26.3" | 11.6" | 4.6" | +7.0% | |
| 285/45R17 | 27.1" | 11.2" | 5.0" | +10.3% |
Sizes within 2% of 24.6" on 18" or 16" wheels.
| Size | Diameter | Width | Sidewall | vs 275/35R17 | |
|---|---|---|---|---|---|
| 275/30R18 | 24.5" | 10.8" | 3.2" | −0.3% | |
| 215/50R16 | 24.5" | 8.5" | 4.2" | −0.5% | |
| 285/30R18 | 24.7" | 11.2" | 3.4" | +0.6% | |
| 225/50R16 | 24.9" | 8.9" | 4.4" | +1.1% | |
| 295/30R18 | 25.0" | 11.6" | 3.5" | +1.6% | |
| 255/35R18 | 25.0" | 10.0" | 3.5" | +1.8% |
Actual speed when the speedometer is calibrated for 275/35R17.
| Speedometer shows | on 255/40R17 | on 275/40R17 | on 285/40R17 |
|---|---|---|---|
| 30 mph | 30.6 mph | 31.3 mph | 31.7 mph |
| 45 mph | 45.8 mph | 47.0 mph | 47.6 mph |
| 60 mph | 61.1 mph | 62.6 mph | 63.4 mph |
| 70 mph | 71.3 mph | 73.1 mph | 74.0 mph |
24.6 inches (624 mm). The sidewall is 3.8 inches.
10.8 inches (275 mm) section width, measured sidewall to sidewall.
About 24.6x10.8R17.
255/40R17 is +1.8% in diameter, within the common 3% guideline. It is 0.8" narrower.