29.5" tall, 9.6" wide, 6.8" sidewall
A 245/70R16 tire is 29.5 inches (749 mm) tall and 9.6 inches wide. The sidewall is 70% of the width, 6.8 inches, on a 16-inch wheel, and the tire turns about 684 times per mile.
In flotation terms that is about 29.5x9.6R16. People often call it a 30-inch tire.
The size most often compared with it is 245/75R16, which is 1.0" taller (+3.3%). At an indicated 60 mph you would be doing 62.0 mph on it, more than the 3% change many shops use as a limit.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 16" wheel, within 20 mm of width and 10 points of aspect ratio.
| Size | Diameter | Width | Sidewall | vs 245/70R16 | |
|---|---|---|---|---|---|
| 265/65R16 | 29.6" | 10.4" | 6.8" | +0.2% | |
| 225/75R16 | 29.3" | 8.9" | 6.6" | −0.7% | |
| 235/75R16 | 29.9" | 9.3" | 6.9" | +1.3% | |
| 255/70R16 | 30.1" | 10.0" | 7.0" | +1.9% | |
| 245/65R16 | 28.5" | 9.6" | 6.3" | −3.3% | |
| 245/75R16 | 30.5" | 9.6" | 7.2" | +3.3% | compare |
| 265/70R16 | 30.6" | 10.4" | 7.3" | +3.7% | compare |
| 255/75R16 | 31.1" | 10.0" | 7.5" | +5.3% | |
| 245/80R16 | 31.4" | 9.6" | 7.7" | +6.5% | |
| 265/75R16 | 31.6" | 10.4" | 7.8" | +7.3% |
Sizes within 2% of 29.5" on 17" or 18" or 15" wheels.
| Size | Diameter | Width | Sidewall | vs 245/70R16 | |
|---|---|---|---|---|---|
| 265/60R17 | 29.5" | 10.4" | 6.3" | +0.1% | |
| 265/55R18 | 29.5" | 10.4" | 5.7" | −0.1% | |
| 245/75R15 | 29.5" | 9.6" | 7.2" | −0.1% | |
| 225/70R17 | 29.4" | 8.9" | 6.2" | −0.3% | |
| 265/70R15 | 29.6" | 10.4" | 7.3" | +0.3% | |
| 315/50R17 | 29.4" | 12.4" | 6.2" | −0.3% |
Actual speed when the speedometer is calibrated for 245/70R16.
| Speedometer shows | on 245/75R16 | on 265/70R16 | on 265/65R16 |
|---|---|---|---|
| 30 mph | 31.0 mph | 31.1 mph | 30.1 mph |
| 45 mph | 46.5 mph | 46.7 mph | 45.1 mph |
| 60 mph | 62.0 mph | 62.2 mph | 60.1 mph |
| 70 mph | 72.3 mph | 72.6 mph | 70.1 mph |
29.5 inches (749 mm). The sidewall is 6.8 inches.
9.6 inches (245 mm) section width, measured sidewall to sidewall.
About 29.5x9.6R16.
245/75R16 is +3.3% in diameter, more than the common 3% guideline, so expect a speedometer error and check clearance. It is 0.0" wider.