40x16.00R15 tire size
40x16.00R15 is a flotation (inch) size: 40.0" tall, 16.0" wide, on a 15" rim — about a 410/75R15. The sidewall is 12.5" and the tire turns 504 times per mile.
40x16.00R15 specs
| Overall diameter (height) | 40.00" · 1016 mm |
|---|---|
| Section width | 16.00" · 406 mm |
| Sidewall height | 12.50" · 318 mm (78% of width) |
| Rim diameter | 15" |
| Circumference | 125.66" · 3.192 m |
| Revolutions per mile | 504 (313 per km) |
| Closest metric size | 410/75R15 |
Equivalent sizes on a 15" 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 | |
|---|---|---|---|---|---|
| 38x15.50R15 | 38.00" | -5.00% | -12 mm | 57.0 mph | calculate → |
| 39.5x13.50R15 | 39.50" | -1.25% | -63 mm | 59.3 mph | calculate → |
| 38.5x14.50R15 | 38.50" | -3.75% | -38 mm | 57.8 mph | calculate → |
| 38x12.50R15 | 38.00" | -5.00% | -88 mm | 57.0 mph | calculate → |
| 42x15.00R15 | 42.00" | +5.00% | -25 mm | 63.0 mph | calculate → |
| 39.5x15.00R15 | 39.50" | -1.25% | -25 mm | 59.3 mph | calculate → |
| 39.5x18.00R15 | 39.50" | -1.25% | +51 mm | 59.3 mph | calculate → |
| 38.5x11.00R15 | 38.50" | -3.75% | -127 mm | 57.8 mph | calculate → |
| 38.5x13.50R15 | 38.50" | -3.75% | -63 mm | 57.8 mph | calculate → |
| 38.5x15.00R15 | 38.50" | -3.75% | -25 mm | 57.8 mph | calculate → |
| 38.5x16.00R15 | 38.50" | -3.75% | 0 mm | 57.8 mph | calculate → |
| 38x13.00R15 | 38.00" | -5.00% | -76 mm | 57.0 mph | calculate → |
| 42x14.00R15 | 42.00" | +5.00% | -50 mm | 63.0 mph | calculate → |
| 39x13.50R15 | 39.00" | -2.50% | -63 mm | 58.5 mph | calculate → |
| 38x14.50R15 | 38.00" | -5.00% | -38 mm | 57.0 mph | calculate → |
Plus / minus sizing: 14" and 16" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 40x16.00R16 | 40.00" | 0.00% | 0 mm | 60.0 mph | calculate → |
Try another size against 40x16.00R15
Questions
What size is 40x16.00R15 in inches?
40x16.00R15 is about 40.0" tall and 16.0" wide on a 15-inch rim — roughly a 410/75R15 in inch sizing.
What does 40x16.00R15 mean?
40" overall diameter, 16.00" section width, radial, 15" rim.
What tire sizes are equivalent to 40x16.00R15?
On the same 15" rim, within 3% of the diameter: 39.5x13.50R15 (-1.25%), 39.5x15.00R15 (-1.25%), 39.5x18.00R15 (-1.25%), 39x13.50R15 (-2.50%), 38.5x11.00R15 (-3.75%), 38.5x13.50R15 (-3.75%).
How many revolutions per mile does a 40x16.00R15 tire make?
About 504 revolutions per mile (circumference 125.7").
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.