32x17.50R15 tire size
32x17.50R15 is a flotation (inch) size: 32.0" tall, 17.5" wide, on a 15" rim — about a 450/50R15. The sidewall is 8.5" and the tire turns 630 times per mile.
32x17.50R15 specs
| Overall diameter (height) | 32.00" · 813 mm |
|---|---|
| Section width | 17.50" · 445 mm |
| Sidewall height | 8.50" · 216 mm (49% of width) |
| Rim diameter | 15" |
| Circumference | 100.53" · 2.553 m |
| Revolutions per mile | 630 (392 per km) |
| Closest metric size | 450/50R15 |
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 | |
|---|---|---|---|---|---|
| 31x10.50R15 common | 31.00" | -3.13% | -178 mm | 58.1 mph | calculate → |
| 33x12.50R15 | 33.00" | +3.13% | -127 mm | 61.9 mph | calculate → |
| 32x11.50R15 | 32.00" | 0.00% | -153 mm | 60.0 mph | calculate → |
| 33x10.50R15 | 33.00" | +3.13% | -178 mm | 61.9 mph | calculate → |
| 265/75R15 | 30.65" | -4.22% | -180 mm | 57.5 mph | calculate → |
| 31x12.50R15 | 31.00" | -3.13% | -127 mm | 58.1 mph | calculate → |
| 33x13.50R15 | 33.00" | +3.13% | -102 mm | 61.9 mph | calculate → |
| 33x14.50R15 | 33.00" | +3.13% | -77 mm | 61.9 mph | calculate → |
| 32x10.50R15 | 32.00" | 0.00% | -178 mm | 60.0 mph | calculate → |
| 32x10.00R15 | 32.00" | 0.00% | -191 mm | 60.0 mph | calculate → |
| 32x14.00R15 | 32.00" | 0.00% | -89 mm | 60.0 mph | calculate → |
| 32x16.00R15 | 32.00" | 0.00% | -39 mm | 60.0 mph | calculate → |
| 32x9.50R15 | 32.00" | 0.00% | -204 mm | 60.0 mph | calculate → |
| 31x11.50R15 | 31.00" | -3.13% | -153 mm | 58.1 mph | calculate → |
| 31x11.00R15 | 31.00" | -3.13% | -166 mm | 58.1 mph | calculate → |
| 31x13.50R15 | 31.00" | -3.13% | -102 mm | 58.1 mph | calculate → |
| 31x13.00R15 | 31.00" | -3.13% | -115 mm | 58.1 mph | calculate → |
| 31x16.50R15 | 31.00" | -3.13% | -26 mm | 58.1 mph | calculate → |
| 31x16.00R15 | 31.00" | -3.13% | -39 mm | 58.1 mph | calculate → |
| 31x18.00R15 | 31.00" | -3.13% | +12 mm | 58.1 mph | calculate → |
| 31x9.50R15 | 31.00" | -3.13% | -204 mm | 58.1 mph | calculate → |
| 33x11.50R15 | 33.00" | +3.13% | -153 mm | 61.9 mph | calculate → |
| 33x13.00R15 | 33.00" | +3.13% | -115 mm | 61.9 mph | calculate → |
| 33x14.00R15 | 33.00" | +3.13% | -89 mm | 61.9 mph | calculate → |
| 33x15.50R15 | 33.00" | +3.13% | -51 mm | 61.9 mph | calculate → |
| 33x16.50R15 | 33.00" | +3.13% | -26 mm | 61.9 mph | calculate → |
| 33x22.00R15 | 33.00" | +3.13% | +114 mm | 61.9 mph | calculate → |
| 33x9.50R15 | 33.00" | +3.13% | -204 mm | 61.9 mph | calculate → |
| 32x18.50R15 | 32.00" | 0.00% | +25 mm | 60.0 mph | calculate → |
| 31x14.50R15 | 31.00" | -3.13% | -77 mm | 58.1 mph | calculate → |
| 31x18.50R15 | 31.00" | -3.13% | +25 mm | 58.1 mph | calculate → |
| 33x19.50R15 | 33.00" | +3.13% | +50 mm | 61.9 mph | calculate → |
| 33x21.50R15 | 33.00" | +3.13% | +101 mm | 61.9 mph | calculate → |
| 33x9.00R15 | 33.00" | +3.13% | -216 mm | 61.9 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 | |
|---|---|---|---|---|---|
| 235/85R16 common | 31.73" | -0.85% | -210 mm | 59.5 mph | calculate → |
| 32x11.50R16 | 32.00" | 0.00% | -153 mm | 60.0 mph | calculate → |
| 285/70R16 | 31.71" | -0.91% | -160 mm | 59.5 mph | calculate → |
| 32x10.00R14 | 32.00" | 0.00% | -191 mm | 60.0 mph | calculate → |
| 32x10.00R16 | 32.00" | 0.00% | -191 mm | 60.0 mph | calculate → |
| 32x9.00R16 | 32.00" | 0.00% | -216 mm | 60.0 mph | calculate → |
| 225/90R16 | 31.94" | -0.17% | -220 mm | 59.9 mph | calculate → |
Try another size against 32x17.50R15
Questions
What size is 32x17.50R15 in inches?
32x17.50R15 is about 32.0" tall and 17.5" wide on a 15-inch rim — roughly a 450/50R15 in inch sizing.
What does 32x17.50R15 mean?
32" overall diameter, 17.50" section width, radial, 15" rim.
What tire sizes are equivalent to 32x17.50R15?
On the same 15" rim, within 3% of the diameter: 32x10.50R15 (0.00%), 32x10.00R15 (0.00%), 32x11.50R15 (0.00%), 32x14.00R15 (0.00%), 32x16.00R15 (0.00%), 32x18.50R15 (0.00%).
How many revolutions per mile does a 32x17.50R15 tire make?
About 630 revolutions per mile (circumference 100.5").
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.