24.5" tall, 8.5" wide, 4.2" sidewall
A 215/50R16 tire is 24.5 inches (621 mm) tall and 8.5 inches wide. The sidewall is 50% of the width, 4.2 inches, on a 16-inch wheel, and the tire turns about 824 times per mile.
In flotation terms that is about 24.5x8.5R16. People often call it a 24-inch tire.
The size most often compared with it is 205/50R16, which is 0.4" shorter (−1.6%). At an indicated 60 mph you would be doing 59.0 mph on it.
| Current | New | Difference |
|---|
| Shows | Actual speed |
|---|
Same 16" wheel, within 20 mm of width and 10 points of aspect ratio.
Sizes within 2% of 24.5" on 14" or 18" or 17" wheels.
| Size | Diameter | Width | Sidewall | vs 215/50R16 | |
|---|---|---|---|---|---|
| 265/50R14 | 24.4" | 10.4" | 5.2" | −0.1% | |
| 275/30R18 | 24.5" | 10.8" | 3.2" | +0.1% | |
| 235/40R17 | 24.4" | 9.3" | 3.7" | −0.3% | |
| 275/35R17 | 24.6" | 10.8" | 3.8" | +0.5% | |
| 245/40R17 | 24.7" | 9.6" | 3.9" | +1.0% | |
| 285/30R18 | 24.7" | 11.2" | 3.4" | +1.1% |
Actual speed when the speedometer is calibrated for 215/50R16.
| Speedometer shows | on 205/50R16 | on 225/50R16 |
|---|---|---|
| 30 mph | 29.5 mph | 30.5 mph |
| 45 mph | 44.3 mph | 45.7 mph |
| 60 mph | 59.0 mph | 61.0 mph |
| 70 mph | 68.9 mph | 71.1 mph |
24.5 inches (621 mm). The sidewall is 4.2 inches.
8.5 inches (215 mm) section width, measured sidewall to sidewall.
About 24.5x8.5R16.
205/50R16 is −1.6% in diameter, within the common 3% guideline. It is 0.4" narrower.