29x8.50R15 tire size
29x8.50R15 is a flotation (inch) size: 29.0" tall, 8.5" wide, on a 15" rim — about a 220/80R15. The sidewall is 7.0" and the tire turns 695 times per mile.
29x8.50R15 specs
| Overall diameter (height) | 29.00" · 737 mm |
|---|---|
| Section width | 8.50" · 216 mm |
| Sidewall height | 7.00" · 178 mm (82% of width) |
| Rim diameter | 15" |
| Circumference | 91.11" · 2.314 m |
| Revolutions per mile | 695 (432 per km) |
| Closest metric size | 220/80R15 |
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 | |
|---|---|---|---|---|---|
| 235/75R15 common | 28.88" | -0.42% | +19 mm | 59.7 mph | calculate → |
| 215/75R15 | 27.70" | -4.49% | -1 mm | 57.3 mph | calculate → |
| 30x9.50R15 | 30.00" | +3.45% | +25 mm | 62.1 mph | calculate → |
| 225/75R15 | 28.29" | -2.46% | +9 mm | 58.5 mph | calculate → |
| 235/70R15 | 27.95" | -3.61% | +19 mm | 57.8 mph | calculate → |
| 255/70R15 | 29.06" | +0.19% | +39 mm | 60.1 mph | calculate → |
| 265/70R15 | 29.61" | +2.09% | +49 mm | 61.3 mph | calculate → |
| 275/60R15 | 27.99" | -3.48% | +59 mm | 57.9 mph | calculate → |
| 29x10.50R15 | 29.00" | 0.00% | +51 mm | 60.0 mph | calculate → |
| 295/65R15 | 30.10" | +3.79% | +79 mm | 62.3 mph | calculate → |
| 325/50R15 | 27.80" | -4.15% | +109 mm | 57.5 mph | calculate → |
| 28x10.50R15 | 28.00" | -3.45% | +51 mm | 57.9 mph | calculate → |
| 28x11.50R15 | 28.00" | -3.45% | +76 mm | 57.9 mph | calculate → |
| 28x9.00R15 | 28.00" | -3.45% | +13 mm | 57.9 mph | calculate → |
| 30x11.50R15 | 30.00" | +3.45% | +76 mm | 62.1 mph | calculate → |
| 295/55R15 | 27.78" | -4.22% | +79 mm | 57.5 mph | calculate → |
| 29x11.50R15 | 29.00" | 0.00% | +76 mm | 60.0 mph | calculate → |
| 29x15.00R15 | 29.00" | 0.00% | +165 mm | 60.0 mph | calculate → |
| 29x18.00R15 | 29.00" | 0.00% | +241 mm | 60.0 mph | calculate → |
| 215/85R15 | 29.39" | +1.34% | -1 mm | 60.8 mph | calculate → |
| 29.5x10.50R15 | 29.50" | +1.72% | +51 mm | 61.0 mph | calculate → |
| 29.5x11.50R15 | 29.50" | +1.72% | +76 mm | 61.0 mph | calculate → |
| 29.5x13.50R15 | 29.50" | +1.72% | +127 mm | 61.0 mph | calculate → |
| 29.5x9.00R15 | 29.50" | +1.72% | +13 mm | 61.0 mph | calculate → |
| 28x10.00R15 | 28.00" | -3.45% | +38 mm | 57.9 mph | calculate → |
| 28x12.00R15 | 28.00" | -3.45% | +89 mm | 57.9 mph | calculate → |
| 28x6.00R15 | 28.00" | -3.45% | -64 mm | 57.9 mph | calculate → |
| 28x7.50R15 | 28.00" | -3.45% | -25 mm | 57.9 mph | calculate → |
| 30x10.50R15 | 30.00" | +3.45% | +51 mm | 62.1 mph | calculate → |
| 30x10.00R15 | 30.00" | +3.45% | +38 mm | 62.1 mph | calculate → |
| 30x12.00R15 | 30.00" | +3.45% | +89 mm | 62.1 mph | calculate → |
| 30x9.00R15 | 30.00" | +3.45% | +13 mm | 62.1 mph | calculate → |
| 255/75R15 | 30.06" | +3.65% | +39 mm | 62.2 mph | calculate → |
| 29x12.50R15 | 29.00" | 0.00% | +102 mm | 60.0 mph | calculate → |
| 29x15.50R15 | 29.00" | 0.00% | +178 mm | 60.0 mph | calculate → |
| 29x18.50R15 | 29.00" | 0.00% | +254 mm | 60.0 mph | calculate → |
| 245/70R15 | 28.50" | -1.71% | +29 mm | 59.0 mph | calculate → |
| 315/60R15 | 29.88" | +3.04% | +99 mm | 61.8 mph | calculate → |
| 255/65R15 | 28.05" | -3.27% | +39 mm | 58.0 mph | calculate → |
| 28x12.50R15 | 28.00" | -3.45% | +102 mm | 57.9 mph | calculate → |
| 28x13.50R15 | 28.00" | -3.45% | +127 mm | 57.9 mph | calculate → |
| 30x12.50R15 | 30.00" | +3.45% | +102 mm | 62.1 mph | calculate → |
| 30x13.50R15 | 30.00" | +3.45% | +127 mm | 62.1 mph | calculate → |
| 30x7.00R15 | 30.00" | +3.45% | -38 mm | 62.1 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 | |
|---|---|---|---|---|---|
| 225/75R16 common | 29.29" | +0.99% | +9 mm | 60.6 mph | calculate → |
| 235/70R16 common | 28.95" | -0.16% | +19 mm | 59.9 mph | calculate → |
| 255/65R16 | 29.05" | +0.18% | +39 mm | 60.1 mph | calculate → |
| 29x9.00R14 | 29.00" | 0.00% | +13 mm | 60.0 mph | calculate → |
| 29x11.00R14 | 29.00" | 0.00% | +63 mm | 60.0 mph | calculate → |
| 225/85R14 | 29.06" | +0.20% | +9 mm | 60.1 mph | calculate → |
| 205/80R16 | 28.91" | -0.30% | -11 mm | 59.8 mph | calculate → |
| 275/60R16 | 28.99" | -0.03% | +59 mm | 60.0 mph | calculate → |
Try another size against 29x8.50R15
Questions
What size is 29x8.50R15 in inches?
29x8.50R15 is about 29.0" tall and 8.5" wide on a 15-inch rim — roughly a 220/80R15 in inch sizing.
What does 29x8.50R15 mean?
29" overall diameter, 8.50" section width, radial, 15" rim.
What tire sizes are equivalent to 29x8.50R15?
On the same 15" rim, within 3% of the diameter: 29x10.50R15 (0.00%), 29x11.50R15 (0.00%), 29x12.50R15 (0.00%), 29x15.50R15 (0.00%), 29x15.00R15 (0.00%), 29x18.50R15 (0.00%).
How many revolutions per mile does a 29x8.50R15 tire make?
About 695 revolutions per mile (circumference 91.1").
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.