Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/65-17 | 315/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.3) | 34.36 (872.8) | 1.75 (44.5) 5.4% |
| Width inches (mm) | 12.01 (305) | 12.4 (315) | 0.39 (10) 3.3% |
| Circum. inches (mm) | 102.45 (2602.18) | 107.95 (2741.98) | 5.5 (139.8) 5.4% |
| Sidewall Height inches (mm) | 7.81 (198.25) | 8.68 (220.5) | 0.88 (22.25) 11.2% |
| Revolutions per mile (km) | 618.46 (384.29) | 586.93 (364.7) | -31.53 (-19.59) -5.1% |
315/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.07 mph (33.92 km/h) |
| 25 mph (40.23 km/h) | 26.34 mph (42.4 km/h) |
| 30 mph (48.28 km/h) | 31.61 mph (50.87 km/h) |
| 35 mph (56.33 km/h) | 36.88 mph (59.35 km/h) |
| 40 mph (64.37 km/h) | 42.15 mph (67.83 km/h) |
| 45 mph (72.42 km/h) | 47.42 mph (76.31 km/h) |
| 50 mph (80.47 km/h) | 52.69 mph (84.79 km/h) |
| 55 mph (88.51 km/h) | 57.95 mph (93.27 km/h) |
| 60 mph (96.56 km/h) | 63.22 mph (101.75 km/h) |
| 65 mph (104.61 km/h) | 68.49 mph (110.23 km/h) |
| 70 mph (112.65 km/h) | 73.76 mph (118.71 km/h) |
| 75 mph (120.7 km/h) | 79.03 mph (127.19 km/h) |
| 80 mph (128.75 km/h) | 84.3 mph (135.66 km/h) |
| 85 mph (136.79 km/h) | 89.57 mph (144.14 km/h) |
| 90 mph (144.84 km/h) | 94.84 mph (152.62 km/h) |
| 95 mph (152.89 km/h) | 100.1 mph (161.1 km/h) |
| 100 mph (160.93 km/h) | 105.37 mph (169.58 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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