Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 31/12.5-17 | 255/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.02 (787.96) | 32.06 (814.3) | 1.04 (26.34) 3.3% |
| Width inches (mm) | 12.52 (318) | 10.04 (255) | -2.48 (-63) -19.8% |
| Circum. inches (mm) | 97.46 (2475.45) | 100.72 (2558.2) | 3.26 (82.75) 3.3% |
| Sidewall Height inches (mm) | 7.01 (178.08) | 7.53 (191.25) | 0.52 (13.17) 7.4% |
| Revolutions per mile (km) | 650.12 (403.97) | 629.09 (390.9) | -21.03 (-13.07) -3.2% |
255/75-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.67 mph (33.26 km/h) |
| 25 mph (40.23 km/h) | 25.84 mph (41.58 km/h) |
| 30 mph (48.28 km/h) | 31 mph (49.89 km/h) |
| 35 mph (56.33 km/h) | 36.17 mph (58.21 km/h) |
| 40 mph (64.37 km/h) | 41.34 mph (66.53 km/h) |
| 45 mph (72.42 km/h) | 46.5 mph (74.84 km/h) |
| 50 mph (80.47 km/h) | 51.67 mph (83.16 km/h) |
| 55 mph (88.51 km/h) | 56.84 mph (91.47 km/h) |
| 60 mph (96.56 km/h) | 62.01 mph (99.79 km/h) |
| 65 mph (104.61 km/h) | 67.17 mph (108.1 km/h) |
| 70 mph (112.65 km/h) | 72.34 mph (116.42 km/h) |
| 75 mph (120.7 km/h) | 77.51 mph (124.74 km/h) |
| 80 mph (128.75 km/h) | 82.67 mph (133.05 km/h) |
| 85 mph (136.79 km/h) | 87.84 mph (141.37 km/h) |
| 90 mph (144.84 km/h) | 93.01 mph (149.68 km/h) |
| 95 mph (152.89 km/h) | 98.18 mph (158 km/h) |
| 100 mph (160.93 km/h) | 103.34 mph (166.31 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 | 1860 | 2003 | 2091 | 2187 | 2255 | 2330 | 2418 | 2541 | 2664 | 2800 | 2909 | 3106 | 3324 | 3495 | 3604 | 3665 | 3890 | 4203 | 4885 |
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