33.1" tall, 11.6" wide, 7.5" sidewall
A 295/65R18 tire is 33.1 inches (841 mm) tall and 11.6 inches wide. The sidewall is 65% of the width, 7.5 inches, on a 18-inch wheel, and the tire turns about 609 times per mile.
In flotation terms that is about 33.1x11.6R18, closest to the common 33x12.50R18 (33.0"). People often call it a 33-inch tire.
The size most often compared with it is 275/70R18, which is 0.1" taller (+0.2%). At an indicated 60 mph you would be doing 60.1 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 295/65R18 | |
|---|---|---|---|---|---|
| 275/70R18 | 33.2" | 10.8" | 7.6" | +0.2% | |
| 305/65R18 | 33.6" | 12.0" | 7.8" | +1.5% | |
| 285/65R18 | 32.6" | 11.2" | 7.3" | −1.5% | |
| 285/70R18 | 33.7" | 11.2" | 7.9" | +1.8% | |
| 305/60R18 | 32.4" | 12.0" | 7.2" | −2.1% | |
| 275/65R18 | 32.1" | 10.8" | 7.0" | −3.1% | |
| 315/65R18 | 34.1" | 12.4" | 8.1" | +3.1% | |
| 275/75R18 | 34.2" | 10.8" | 8.1" | +3.4% | |
| 295/60R18 | 31.9" | 11.6" | 7.0" | −3.5% | |
| 295/70R18 | 34.3" | 11.6" | 8.1" | +3.5% |
Sizes within 2% of 33.1" on 17" or 16" or 19" or 20" wheels.
| Size | Diameter | Width | Sidewall | vs 295/65R18 | |
|---|---|---|---|---|---|
| 315/65R17 | 33.1" | 12.4" | 8.1" | +0.1% | |
| 255/85R16 | 33.1" | 10.0" | 8.5" | −0.1% | |
| 255/80R17 | 33.1" | 10.0" | 8.0" | −0.1% | |
| 255/70R19 | 33.1" | 10.0" | 7.0" | −0.1% | |
| 255/65R20 | 33.1" | 10.0" | 6.5" | −0.1% | |
| 33x12.50R16 | 33.0" | 12.5" | 8.5" | −0.3% |
Actual speed when the speedometer is calibrated for 295/65R18.
| Speedometer shows | on 275/70R18 | on 305/65R18 | on 285/65R18 |
|---|---|---|---|
| 30 mph | 30.1 mph | 30.5 mph | 29.5 mph |
| 45 mph | 45.1 mph | 45.7 mph | 44.3 mph |
| 60 mph | 60.1 mph | 60.9 mph | 59.1 mph |
| 70 mph | 70.1 mph | 71.1 mph | 68.9 mph |
33.1 inches (841 mm). The sidewall is 7.5 inches.
11.6 inches (295 mm) section width, measured sidewall to sidewall.
About 33.1x11.6R18; the closest common flotation size is 33x12.50R18 at 33.0".
275/70R18 is +0.2% in diameter, within the common 3% guideline. It is 0.8" narrower.