38x15.50R26 tire size
38x15.50R26 is a flotation (inch) size: 38.0" tall, 15.5" wide, on a 26" rim — about a 390/40R26. The sidewall is 6.0" and the tire turns 531 times per mile.
38x15.50R26 specs
| Overall diameter (height) | 38.00" · 965 mm |
|---|---|
| Section width | 15.50" · 394 mm |
| Sidewall height | 6.00" · 152 mm (39% of width) |
| Rim diameter | 26" |
| Circumference | 119.38" · 3.032 m |
| Revolutions per mile | 531 (330 per km) |
| Closest metric size | 390/40R26 |
Equivalent sizes on a 26" 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 | |
|---|---|---|---|---|---|
| 37x13.50R26 | 37.00" | -2.63% | -51 mm | 58.4 mph | calculate → |
Try another size against 38x15.50R26
Questions
What size is 38x15.50R26 in inches?
38x15.50R26 is about 38.0" tall and 15.5" wide on a 26-inch rim — roughly a 390/40R26 in inch sizing.
What does 38x15.50R26 mean?
38" overall diameter, 15.50" section width, radial, 26" rim.
What tire sizes are equivalent to 38x15.50R26?
On the same 26" rim, within 3% of the diameter: 37x13.50R26 (-2.63%).
How many revolutions per mile does a 38x15.50R26 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.