Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/25-20 | 255/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.61 (650.5) | 32.06 (814.3) | 6.45 (163.8) 25.2% |
| Width inches (mm) | 11.22 (285) | 10.04 (255) | -1.18 (-30) -10.5% |
| Circum. inches (mm) | 80.46 (2043.61) | 100.72 (2558.2) | 20.26 (514.59) 25.2% |
| Sidewall Height inches (mm) | 2.81 (71.25) | 7.53 (191.25) | 4.72 (120) 168.4% |
| Revolutions per mile (km) | 787.5 (489.33) | 629.09 (390.9) | -158.41 (-98.43) -20.1% |
255/75-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.04 mph (40.29 km/h) |
| 25 mph (40.23 km/h) | 31.3 mph (50.36 km/h) |
| 30 mph (48.28 km/h) | 37.55 mph (60.44 km/h) |
| 35 mph (56.33 km/h) | 43.81 mph (70.51 km/h) |
| 40 mph (64.37 km/h) | 50.07 mph (80.58 km/h) |
| 45 mph (72.42 km/h) | 56.33 mph (90.66 km/h) |
| 50 mph (80.47 km/h) | 62.59 mph (100.73 km/h) |
| 55 mph (88.51 km/h) | 68.85 mph (110.8 km/h) |
| 60 mph (96.56 km/h) | 75.11 mph (120.88 km/h) |
| 65 mph (104.61 km/h) | 81.37 mph (130.95 km/h) |
| 70 mph (112.65 km/h) | 87.63 mph (141.02 km/h) |
| 75 mph (120.7 km/h) | 93.89 mph (151.09 km/h) |
| 80 mph (128.75 km/h) | 100.14 mph (161.17 km/h) |
| 85 mph (136.79 km/h) | 106.4 mph (171.24 km/h) |
| 90 mph (144.84 km/h) | 112.66 mph (181.31 km/h) |
| 95 mph (152.89 km/h) | 118.92 mph (191.39 km/h) |
| 100 mph (160.93 km/h) | 125.18 mph (201.46 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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