32.5" tall, 9.6" wide, 6.8" sidewall
A 245/70R19 tire is 32.5 inches (826 mm) tall and 9.6 inches wide. The sidewall is 70% of the width, 6.8 inches, on a 19-inch wheel, and the tire turns about 620 times per mile.
In flotation terms that is about 32.5x9.6R19. People often call it a 33-inch tire.
The size most often compared with it is 225/75R19, which is 0.2" shorter (−0.7%). At an indicated 60 mph you would be doing 59.6 mph on it.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 19" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 245/70R19 | |
|---|---|---|---|---|---|
| 225/75R19 | 32.3" | 8.9" | 6.6" | −0.7% | |
| 255/70R19 | 33.1" | 10.0" | 7.0" | +1.7% | |
| 245/75R19 | 33.5" | 9.6" | 7.2" | +3.0% | |
| 225/70R19 | 31.4" | 8.9" | 6.2" | −3.4% | |
| 265/70R19 | 33.6" | 10.4" | 7.3" | +3.4% |
Sizes within 2% of 32.5" on 20" or 18" or 17" wheels.
| Size | Diameter | Width | Sidewall | vs 245/70R19 | |
|---|---|---|---|---|---|
| 265/60R20 | 32.5" | 10.4" | 6.3" | +0.0% | |
| 245/75R18 | 32.5" | 9.6" | 7.2" | −0.1% | |
| 245/80R17 | 32.4" | 9.6" | 7.7" | −0.2% | |
| 285/65R18 | 32.6" | 11.2" | 7.3" | +0.3% | |
| 305/60R18 | 32.4" | 12.0" | 7.2" | −0.3% | |
| 315/50R20 | 32.4" | 12.4" | 6.2" | −0.3% |
Actual speed when the speedometer is calibrated for 245/70R19.
| Speedometer shows | on 225/75R19 | on 255/70R19 | on 245/75R19 |
|---|---|---|---|
| 30 mph | 29.8 mph | 30.5 mph | 30.9 mph |
| 45 mph | 44.7 mph | 45.8 mph | 46.3 mph |
| 60 mph | 59.6 mph | 61.0 mph | 61.8 mph |
| 70 mph | 69.5 mph | 71.2 mph | 72.1 mph |
32.5 inches (826 mm). The sidewall is 6.8 inches.
9.6 inches (245 mm) section width, measured sidewall to sidewall.
About 32.5x9.6R19.
225/75R19 is −0.7% in diameter, within the common 3% guideline. It is 0.8" narrower.