31.9" tall, 11.6" wide, 7.0" sidewall
A 295/60R18 tire is 31.9 inches (811 mm) tall and 11.6 inches wide. The sidewall is 60% of the width, 7.0 inches, on a 18-inch wheel, and the tire turns about 631 times per mile.
In flotation terms that is about 31.9x11.6R18. People often call it a 32-inch tire.
The size most often compared with it is 275/65R18, which is 0.1" taller (+0.4%). At an indicated 60 mph you would be doing 60.3 mph on it.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 18" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 295/60R18 | |
|---|---|---|---|---|---|
| 275/65R18 | 32.1" | 10.8" | 7.0" | +0.4% | |
| 285/60R18 | 31.5" | 11.2" | 6.7" | −1.5% | |
| 305/60R18 | 32.4" | 12.0" | 7.2" | +1.5% | |
| 285/65R18 | 32.6" | 11.2" | 7.3" | +2.0% | |
| 305/55R18 | 31.2" | 12.0" | 6.6" | −2.3% | |
| 275/60R18 | 31.0" | 10.8" | 6.5" | −3.0% | |
| 295/65R18 | 33.1" | 11.6" | 7.5" | +3.6% | |
| 295/55R18 | 30.8" | 11.6" | 6.4" | −3.6% | |
| 275/70R18 | 33.2" | 10.8" | 7.6" | +3.8% | |
| 285/55R18 | 30.3" | 11.2" | 6.2" | −5.0% |
Sizes within 2% of 31.9" on 20" or 17" or 16" wheels.
| Size | Diameter | Width | Sidewall | vs 295/60R18 | |
|---|---|---|---|---|---|
| 275/55R20 | 31.9" | 10.8" | 6.0" | −0.1% | |
| 315/60R17 | 31.9" | 12.4" | 7.4" | −0.2% | |
| 305/50R20 | 32.0" | 12.0" | 6.0" | +0.2% | |
| 255/60R20 | 32.0" | 10.0" | 6.0" | +0.3% | |
| 255/75R17 | 32.1" | 10.0" | 7.5" | +0.4% | |
| 255/80R16 | 32.1" | 10.0" | 8.0" | +0.4% |
Actual speed when the speedometer is calibrated for 295/60R18.
| Speedometer shows | on 275/65R18 | on 285/60R18 | on 305/60R18 |
|---|---|---|---|
| 30 mph | 30.1 mph | 29.6 mph | 30.4 mph |
| 45 mph | 45.2 mph | 44.3 mph | 45.7 mph |
| 60 mph | 60.3 mph | 59.1 mph | 60.9 mph |
| 70 mph | 70.3 mph | 69.0 mph | 71.0 mph |
31.9 inches (811 mm). The sidewall is 7.0 inches.
11.6 inches (295 mm) section width, measured sidewall to sidewall.
About 31.9x11.6R18.
275/65R18 is +0.4% in diameter, within the common 3% guideline. It is 0.8" narrower.