Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/30-30 | 315/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 37.44 (951) | 34.36 (872.8) | -3.08 (-78.2) -8.2% |
| Width inches (mm) | 12.4 (315) | 12.4 (315) | 0 (0) 0% |
| Circum. inches (mm) | 117.62 (2987.65) | 107.95 (2741.98) | -9.67 (-245.67) -8.2% |
| Sidewall Height inches (mm) | 3.72 (94.5) | 8.68 (220.5) | 4.96 (126) 133.3% |
| Revolutions per mile (km) | 538.66 (334.71) | 586.93 (364.7) | 48.26 (29.99) 9% |
315/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.36 mph (29.54 km/h) |
| 25 mph (40.23 km/h) | 22.94 mph (36.93 km/h) |
| 30 mph (48.28 km/h) | 27.53 mph (44.31 km/h) |
| 35 mph (56.33 km/h) | 32.12 mph (51.7 km/h) |
| 40 mph (64.37 km/h) | 36.71 mph (59.08 km/h) |
| 45 mph (72.42 km/h) | 41.3 mph (66.47 km/h) |
| 50 mph (80.47 km/h) | 45.89 mph (73.85 km/h) |
| 55 mph (88.51 km/h) | 50.48 mph (81.24 km/h) |
| 60 mph (96.56 km/h) | 55.07 mph (88.62 km/h) |
| 65 mph (104.61 km/h) | 59.66 mph (96.01 km/h) |
| 70 mph (112.65 km/h) | 64.24 mph (103.39 km/h) |
| 75 mph (120.7 km/h) | 68.83 mph (110.78 km/h) |
| 80 mph (128.75 km/h) | 73.42 mph (118.16 km/h) |
| 85 mph (136.79 km/h) | 78.01 mph (125.55 km/h) |
| 90 mph (144.84 km/h) | 82.6 mph (132.93 km/h) |
| 95 mph (152.89 km/h) | 87.19 mph (140.32 km/h) |
| 100 mph (160.93 km/h) | 91.78 mph (147.7 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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