38x15.50R22 tire size
38x15.50R22 is a flotation (inch) size: 38.0" tall, 15.5" wide, on a 22" rim — about a 390/50R22. The sidewall is 8.0" and the tire turns 531 times per mile.
38x15.50R22 specs
| Overall diameter (height) | 38.00" · 965 mm |
|---|---|
| Section width | 15.50" · 394 mm |
| Sidewall height | 8.00" · 203 mm (52% of width) |
| Rim diameter | 22" |
| Circumference | 119.38" · 3.032 m |
| Revolutions per mile | 531 (330 per km) |
| Closest metric size | 390/50R22 |
Equivalent sizes on a 22" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 37x13.50R22 | 37.00" | -2.63% | -51 mm | 58.4 mph | calculate → |
| 37x12.50R22 | 37.00" | -2.63% | -76 mm | 58.4 mph | calculate → |
| 38x13.50R22 | 38.00" | 0.00% | -51 mm | 60.0 mph | calculate → |
| 335/55R22 | 36.51" | -3.93% | -59 mm | 57.6 mph | calculate → |
| 325/60R22 | 37.35" | -1.70% | -69 mm | 59.0 mph | calculate → |
| 355/60R22 | 38.77" | +2.03% | -39 mm | 61.2 mph | calculate → |
Try another size against 38x15.50R22
Questions
What size is 38x15.50R22 in inches?
38x15.50R22 is about 38.0" tall and 15.5" wide on a 22-inch rim — roughly a 390/50R22 in inch sizing.
What does 38x15.50R22 mean?
38" overall diameter, 15.50" section width, radial, 22" rim.
What tire sizes are equivalent to 38x15.50R22?
On the same 22" rim, within 3% of the diameter: 38x13.50R22 (0.00%), 325/60R22 (-1.70%), 355/60R22 (+2.03%), 37x12.50R22 (-2.63%), 37x13.50R22 (-2.63%), 335/55R22 (-3.93%).
How many revolutions per mile does a 38x15.50R22 tire make?
About 531 revolutions per mile (circumference 119.4").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.