38x15.50R24 tire size
38x15.50R24 is a flotation (inch) size: 38.0" tall, 15.5" wide, on a 24" rim — about a 390/45R24. The sidewall is 7.0" and the tire turns 531 times per mile.
38x15.50R24 specs
| Overall diameter (height) | 38.00" · 965 mm |
|---|---|
| Section width | 15.50" · 394 mm |
| Sidewall height | 7.00" · 178 mm (45% of width) |
| Rim diameter | 24" |
| Circumference | 119.38" · 3.032 m |
| Revolutions per mile | 531 (330 per km) |
| Closest metric size | 390/45R24 |
Equivalent sizes on a 24" 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 | |
|---|---|---|---|---|---|
| 37x13.50R24 | 37.00" | -2.63% | -51 mm | 58.4 mph | calculate → |
| 38x13.50R24 | 38.00" | 0.00% | -51 mm | 60.0 mph | calculate → |
| 37x14.50R24 | 37.00" | -2.63% | -26 mm | 58.4 mph | calculate → |
| 345/50R24 | 37.58" | -1.10% | -49 mm | 59.3 mph | calculate → |
| 38x14.00R24 | 38.00" | 0.00% | -38 mm | 60.0 mph | calculate → |
| 365/45R24 | 36.93" | -2.81% | -29 mm | 58.3 mph | calculate → |
Try another size against 38x15.50R24
Questions
What size is 38x15.50R24 in inches?
38x15.50R24 is about 38.0" tall and 15.5" wide on a 24-inch rim — roughly a 390/45R24 in inch sizing.
What does 38x15.50R24 mean?
38" overall diameter, 15.50" section width, radial, 24" rim.
What tire sizes are equivalent to 38x15.50R24?
On the same 24" rim, within 3% of the diameter: 38x13.50R24 (0.00%), 38x14.00R24 (0.00%), 345/50R24 (-1.10%), 37x13.50R24 (-2.63%), 37x14.50R24 (-2.63%), 365/45R24 (-2.81%).
How many revolutions per mile does a 38x15.50R24 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.