29.6" tall, 10.4" wide, 7.3" sidewall
A 265/70R15 tire is 29.6 inches (752 mm) tall and 10.4 inches wide. The sidewall is 70% of the width, 7.3 inches, on a 15-inch wheel, and the tire turns about 681 times per mile.
In flotation terms that is about 29.6x10.4R15, closest to the common 30x9.50R15 (30.0"). People often call it a 30-inch tire.
The size most often compared with it is 235/75R15, which is 0.7" shorter (−2.5%). At an indicated 60 mph you would be doing 58.5 mph on it.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 15" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 265/70R15 | |
|---|---|---|---|---|---|
| 245/75R15 | 29.5" | 9.6" | 7.2" | −0.5% | |
| 255/75R15 | 30.1" | 10.0" | 7.5" | +1.5% | |
| 255/70R15 | 29.1" | 10.0" | 7.0" | −1.9% | |
| 275/70R15 | 30.2" | 10.8" | 7.6" | +1.9% | |
| 265/75R15 | 30.6" | 10.4" | 7.8" | +3.5% | compare |
| 265/65R15 | 28.6" | 10.4" | 6.8" | −3.5% | |
| 285/70R15 | 30.7" | 11.2" | 7.9" | +3.7% | |
| 245/70R15 | 28.5" | 9.6" | 6.8" | −3.7% | |
| 285/60R15 | 28.5" | 11.2" | 6.7" | −3.9% | |
| 31x10.50R15 | 31.0" | 10.5" | 8.0" | +4.7% |
Sizes within 2% of 29.6" on 16" or 17" wheels.
| Size | Diameter | Width | Sidewall | vs 265/70R15 | |
|---|---|---|---|---|---|
| 315/55R16 | 29.6" | 12.4" | 6.8" | +0.1% | |
| 265/65R16 | 29.6" | 10.4" | 6.8" | −0.1% | |
| 215/80R16 | 29.5" | 8.5" | 6.8" | −0.2% | |
| 265/60R17 | 29.5" | 10.4" | 6.3" | −0.3% | |
| 245/70R16 | 29.5" | 9.6" | 6.8" | −0.3% | |
| 285/60R16 | 29.5" | 11.2" | 6.7" | −0.5% |
Actual speed when the speedometer is calibrated for 265/70R15.
| Speedometer shows | on 235/75R15 | on 265/75R15 | on 245/75R15 |
|---|---|---|---|
| 30 mph | 29.3 mph | 31.1 mph | 29.9 mph |
| 45 mph | 43.9 mph | 46.6 mph | 44.8 mph |
| 60 mph | 58.5 mph | 62.1 mph | 59.7 mph |
| 70 mph | 68.3 mph | 72.5 mph | 69.7 mph |
29.6 inches (752 mm). The sidewall is 7.3 inches.
10.4 inches (265 mm) section width, measured sidewall to sidewall.
About 29.6x10.4R15; the closest common flotation size is 30x9.50R15 at 30.0".
235/75R15 is −2.5% in diameter, within the common 3% guideline. It is 1.2" narrower.