Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/70-17 | 315/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.71 (830.8) | 34.36 (872.8) | 1.65 (42) 5.1% |
| Width inches (mm) | 11.22 (285) | 12.4 (315) | 1.18 (30) 10.5% |
| Circum. inches (mm) | 102.76 (2610.04) | 107.95 (2741.98) | 5.19 (131.95) 5.1% |
| Sidewall Height inches (mm) | 7.85 (199.5) | 8.68 (220.5) | 0.83 (21) 10.5% |
| Revolutions per mile (km) | 616.6 (383.14) | 586.93 (364.7) | -29.67 (-18.44) -4.8% |
315/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.01 mph (33.81 km/h) |
| 25 mph (40.23 km/h) | 26.26 mph (42.27 km/h) |
| 30 mph (48.28 km/h) | 31.52 mph (50.72 km/h) |
| 35 mph (56.33 km/h) | 36.77 mph (59.17 km/h) |
| 40 mph (64.37 km/h) | 42.02 mph (67.63 km/h) |
| 45 mph (72.42 km/h) | 47.27 mph (76.08 km/h) |
| 50 mph (80.47 km/h) | 52.53 mph (84.54 km/h) |
| 55 mph (88.51 km/h) | 57.78 mph (92.99 km/h) |
| 60 mph (96.56 km/h) | 63.03 mph (101.44 km/h) |
| 65 mph (104.61 km/h) | 68.29 mph (109.9 km/h) |
| 70 mph (112.65 km/h) | 73.54 mph (118.35 km/h) |
| 75 mph (120.7 km/h) | 78.79 mph (126.8 km/h) |
| 80 mph (128.75 km/h) | 84.04 mph (135.26 km/h) |
| 85 mph (136.79 km/h) | 89.3 mph (143.71 km/h) |
| 90 mph (144.84 km/h) | 94.55 mph (152.16 km/h) |
| 95 mph (152.89 km/h) | 99.8 mph (160.62 km/h) |
| 100 mph (160.93 km/h) | 105.06 mph (169.07 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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