28.6" tall, 10.4" wide, 6.8" sidewall
A 265/65R15 tire is 28.6 inches (726 mm) tall and 10.4 inches wide. The sidewall is 65% of the width, 6.8 inches, on a 15-inch wheel, and the tire turns about 706 times per mile.
In flotation terms that is about 28.6x10.4R15. People often call it a 29-inch tire.
The size most often compared with it is 245/70R15, which is 0.1" shorter (−0.2%). At an indicated 60 mph you would be doing 59.9 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 265/65R15 | |
|---|---|---|---|---|---|
| 245/70R15 | 28.5" | 9.6" | 6.8" | −0.2% | |
| 285/60R15 | 28.5" | 11.2" | 6.7" | −0.3% | |
| 255/70R15 | 29.1" | 10.0" | 7.0" | +1.7% | |
| 255/65R15 | 28.1" | 10.0" | 6.5" | −1.8% | |
| 275/60R15 | 28.0" | 10.8" | 6.5" | −2.0% | |
| 245/75R15 | 29.5" | 9.6" | 7.2" | +3.2% | |
| 265/70R15 | 29.6" | 10.4" | 7.3" | +3.7% | |
| 255/75R15 | 30.1" | 10.0" | 7.5" | +5.2% | |
| 255/60R15 | 27.0" | 10.0" | 6.0" | −5.3% | |
| 275/70R15 | 30.2" | 10.8" | 7.6" | +5.6% |
Sizes within 2% of 28.6" on 17" or 16" wheels.
| Size | Diameter | Width | Sidewall | vs 265/65R15 | |
|---|---|---|---|---|---|
| 245/60R17 | 28.6" | 9.6" | 5.8" | +0.0% | |
| 245/65R16 | 28.5" | 9.6" | 6.3" | −0.1% | |
| 325/45R17 | 28.5" | 12.8" | 5.8" | −0.2% | |
| 275/55R17 | 28.9" | 10.8" | 6.0" | +1.2% | |
| 205/80R16 | 28.9" | 8.1" | 6.5" | +1.2% | |
| 275/60R16 | 29.0" | 10.8" | 6.5" | +1.5% |
Actual speed when the speedometer is calibrated for 265/65R15.
| Speedometer shows | on 245/70R15 | on 285/60R15 | on 255/70R15 |
|---|---|---|---|
| 30 mph | 29.9 mph | 29.9 mph | 30.5 mph |
| 45 mph | 44.9 mph | 44.8 mph | 45.8 mph |
| 60 mph | 59.9 mph | 59.8 mph | 61.0 mph |
| 70 mph | 69.9 mph | 69.8 mph | 71.2 mph |
28.6 inches (726 mm). The sidewall is 6.8 inches.
10.4 inches (265 mm) section width, measured sidewall to sidewall.
About 28.6x10.4R15.
245/70R15 is −0.2% in diameter, within the common 3% guideline. It is 0.8" narrower.