Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-10 | 285/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 17.97 (456.5) | 31.22 (793) | 13.25 (336.5) 73.7% |
| Width inches (mm) | 8.86 (225) | 11.22 (285) | 2.36 (60) 26.7% |
| Circum. inches (mm) | 56.46 (1434.14) | 98.08 (2491.28) | 41.62 (1057.15) 73.7% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 5.61 (142.5) | 1.62 (41.25) 40.7% |
| Revolutions per mile (km) | 1122.17 (697.28) | 645.99 (401.4) | -476.18 (-295.88) -42.4% |
285/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 34.74 mph (55.91 km/h) |
| 25 mph (40.23 km/h) | 43.43 mph (69.89 km/h) |
| 30 mph (48.28 km/h) | 52.11 mph (83.87 km/h) |
| 35 mph (56.33 km/h) | 60.8 mph (97.85 km/h) |
| 40 mph (64.37 km/h) | 69.49 mph (111.83 km/h) |
| 45 mph (72.42 km/h) | 78.17 mph (125.8 km/h) |
| 50 mph (80.47 km/h) | 86.86 mph (139.78 km/h) |
| 55 mph (88.51 km/h) | 95.54 mph (153.76 km/h) |
| 60 mph (96.56 km/h) | 104.23 mph (167.74 km/h) |
| 65 mph (104.61 km/h) | 112.91 mph (181.72 km/h) |
| 70 mph (112.65 km/h) | 121.6 mph (195.7 km/h) |
| 75 mph (120.7 km/h) | 130.28 mph (209.67 km/h) |
| 80 mph (128.75 km/h) | 138.97 mph (223.65 km/h) |
| 85 mph (136.79 km/h) | 147.66 mph (237.63 km/h) |
| 90 mph (144.84 km/h) | 156.34 mph (251.61 km/h) |
| 95 mph (152.89 km/h) | 165.03 mph (265.59 km/h) |
| 100 mph (160.93 km/h) | 173.71 mph (279.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1644 | 1910 | 2057 | 2148 | 2246 | 2315 | 2392 | 2483 | 2609 | 2735 | 2875 | 2987 | 3190 | 3414 | 3589 | 3701 | 3764 | 3994 | 4316 | 5016 |
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