Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/75-17 | 315/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.83 (859.3) | 34.36 (872.8) | 0.53 (13.5) 1.6% |
| Width inches (mm) | 11.22 (285) | 12.4 (315) | 1.18 (30) 10.5% |
| Circum. inches (mm) | 106.28 (2699.57) | 107.95 (2741.98) | 1.67 (42.41) 1.6% |
| Sidewall Height inches (mm) | 8.42 (213.75) | 8.68 (220.5) | 0.27 (6.75) 3.2% |
| Revolutions per mile (km) | 596.15 (370.43) | 586.93 (364.7) | -9.22 (-5.73) -1.5% |
315/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.31 mph (32.69 km/h) |
| 25 mph (40.23 km/h) | 25.39 mph (40.87 km/h) |
| 30 mph (48.28 km/h) | 30.47 mph (49.04 km/h) |
| 35 mph (56.33 km/h) | 35.55 mph (57.21 km/h) |
| 40 mph (64.37 km/h) | 40.63 mph (65.39 km/h) |
| 45 mph (72.42 km/h) | 45.71 mph (73.56 km/h) |
| 50 mph (80.47 km/h) | 50.79 mph (81.73 km/h) |
| 55 mph (88.51 km/h) | 55.86 mph (89.9 km/h) |
| 60 mph (96.56 km/h) | 60.94 mph (98.08 km/h) |
| 65 mph (104.61 km/h) | 66.02 mph (106.25 km/h) |
| 70 mph (112.65 km/h) | 71.1 mph (114.42 km/h) |
| 75 mph (120.7 km/h) | 76.18 mph (122.6 km/h) |
| 80 mph (128.75 km/h) | 81.26 mph (130.77 km/h) |
| 85 mph (136.79 km/h) | 86.34 mph (138.94 km/h) |
| 90 mph (144.84 km/h) | 91.41 mph (147.12 km/h) |
| 95 mph (152.89 km/h) | 96.49 mph (155.29 km/h) |
| 100 mph (160.93 km/h) | 101.57 mph (163.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1494 | 1735 | 1869 | 1951 | 2040 | 2104 | 2174 | 2256 | 2371 | 2485 | 2612 | 2714 | 2898 | 3102 | 3261 | 3362 | 3419 | 3629 | 3922 | 4557 |
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