31x10.50R17 tire size
31x10.50R17 is a flotation (inch) size: 31.0" tall, 10.5" wide, on a 17" rim — about a 270/65R17. The sidewall is 7.0" and the tire turns 651 times per mile.
31x10.50R17 specs
| Overall diameter (height) | 31.00" · 787 mm |
|---|---|
| Section width | 10.50" · 267 mm |
| Sidewall height | 7.00" · 178 mm (67% of width) |
| Rim diameter | 17" |
| Circumference | 97.39" · 2.474 m |
| Revolutions per mile | 651 (404 per km) |
| Closest metric size | 270/65R17 |
Equivalent sizes on a 17" 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 | |
|---|---|---|---|---|---|
| 265/70R17 common | 31.61" | +1.96% | -2 mm | 61.2 mph | calculate → |
| 245/70R17 common | 30.50" | -1.60% | -22 mm | 59.0 mph | calculate → |
| 245/65R17 common | 29.54" | -4.71% | -22 mm | 57.2 mph | calculate → |
| 245/75R17 common | 31.47" | +1.51% | -22 mm | 60.9 mph | calculate → |
| 265/65R17 common | 30.56" | -1.41% | -2 mm | 59.2 mph | calculate → |
| 235/80R17 common | 31.80" | +2.59% | -32 mm | 61.6 mph | calculate → |
| 255/65R17 common | 30.05" | -3.06% | -12 mm | 58.2 mph | calculate → |
| 255/70R17 common | 31.06" | +0.18% | -12 mm | 60.1 mph | calculate → |
| 255/75R17 | 32.06" | +3.42% | -12 mm | 62.0 mph | calculate → |
| 235/75R17 | 30.88" | -0.39% | -32 mm | 59.8 mph | calculate → |
| 275/70R17 | 32.16" | +3.73% | +8 mm | 62.2 mph | calculate → |
| 235/70R17 | 29.95" | -3.38% | -32 mm | 58.0 mph | calculate → |
| 225/75R17 | 30.29" | -2.30% | -42 mm | 58.6 mph | calculate → |
| 275/60R17 | 29.99" | -3.25% | +8 mm | 58.0 mph | calculate → |
| 275/65R17 | 31.07" | +0.24% | +8 mm | 60.1 mph | calculate → |
| 265/60R17 | 29.52" | -4.78% | -2 mm | 57.1 mph | calculate → |
| 285/65R17 | 31.59" | +1.89% | +18 mm | 61.1 mph | calculate → |
| 315/55R17 | 30.64" | -1.16% | +48 mm | 59.3 mph | calculate → |
| 315/60R17 | 31.88" | +2.84% | +48 mm | 61.7 mph | calculate → |
| 32x11.50R17 | 32.00" | +3.23% | +25 mm | 61.9 mph | calculate → |
| 285/60R17 | 30.46" | -1.73% | +18 mm | 59.0 mph | calculate → |
| 32x10.50R17 | 32.00" | +3.23% | 0 mm | 61.9 mph | calculate → |
Plus / minus sizing: 16" and 18" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 255/65R18 common | 31.05" | +0.17% | -12 mm | 60.1 mph | calculate → |
| 275/60R18 | 30.99" | -0.03% | +8 mm | 60.0 mph | calculate → |
| 275/70R16 | 31.16" | +0.51% | +8 mm | 60.3 mph | calculate → |
| 235/80R16 | 30.80" | -0.64% | -32 mm | 59.6 mph | calculate → |
| 31x12.50R16 | 31.00" | 0.00% | +51 mm | 60.0 mph | calculate → |
| 31x10.50R16 | 31.00" | 0.00% | 0 mm | 60.0 mph | calculate → |
| 31x11.50R16 | 31.00" | 0.00% | +25 mm | 60.0 mph | calculate → |
| 31x11.00R16 | 31.00" | 0.00% | +12 mm | 60.0 mph | calculate → |
| 235/70R18 | 30.95" | -0.15% | -32 mm | 59.9 mph | calculate → |
| 225/85R16 | 31.06" | +0.19% | -42 mm | 60.1 mph | calculate → |
Try another size against 31x10.50R17
Questions
What size is 31x10.50R17 in inches?
31x10.50R17 is about 31.0" tall and 10.5" wide on a 17-inch rim — roughly a 270/65R17 in inch sizing.
What does 31x10.50R17 mean?
31" overall diameter, 10.50" section width, radial, 17" rim.
What tire sizes are equivalent to 31x10.50R17?
On the same 17" rim, within 3% of the diameter: 255/70R17 (+0.18%), 275/65R17 (+0.24%), 235/75R17 (-0.39%), 315/55R17 (-1.16%), 265/65R17 (-1.41%), 245/75R17 (+1.51%).
How many revolutions per mile does a 31x10.50R17 tire make?
About 651 revolutions per mile (circumference 97.4").
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.