Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/60-17 | 315/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.41 (797.8) | 34.36 (872.8) | 2.95 (75) 9.4% |
| Width inches (mm) | 12.01 (305) | 12.4 (315) | 0.39 (10) 3.3% |
| Circum. inches (mm) | 98.68 (2506.36) | 107.95 (2741.98) | 9.28 (235.62) 9.4% |
| Sidewall Height inches (mm) | 7.2 (183) | 8.68 (220.5) | 1.48 (37.5) 20.5% |
| Revolutions per mile (km) | 642.1 (398.98) | 586.93 (364.7) | -55.18 (-34.28) -8.6% |
315/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.88 mph (35.21 km/h) |
| 25 mph (40.23 km/h) | 27.35 mph (44.02 km/h) |
| 30 mph (48.28 km/h) | 32.82 mph (52.82 km/h) |
| 35 mph (56.33 km/h) | 38.29 mph (61.62 km/h) |
| 40 mph (64.37 km/h) | 43.76 mph (70.43 km/h) |
| 45 mph (72.42 km/h) | 49.23 mph (79.23 km/h) |
| 50 mph (80.47 km/h) | 54.7 mph (88.03 km/h) |
| 55 mph (88.51 km/h) | 60.17 mph (96.84 km/h) |
| 60 mph (96.56 km/h) | 65.64 mph (105.64 km/h) |
| 65 mph (104.61 km/h) | 71.11 mph (114.44 km/h) |
| 70 mph (112.65 km/h) | 76.58 mph (123.24 km/h) |
| 75 mph (120.7 km/h) | 82.05 mph (132.05 km/h) |
| 80 mph (128.75 km/h) | 87.52 mph (140.85 km/h) |
| 85 mph (136.79 km/h) | 92.99 mph (149.65 km/h) |
| 90 mph (144.84 km/h) | 98.46 mph (158.46 km/h) |
| 95 mph (152.89 km/h) | 103.93 mph (167.26 km/h) |
| 100 mph (160.93 km/h) | 109.4 mph (176.06 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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