Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/75-17 | 315/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.47 (799.3) | 34.36 (872.8) | 2.89 (73.5) 9.2% |
| Width inches (mm) | 9.65 (245) | 12.4 (315) | 2.76 (70) 28.6% |
| Circum. inches (mm) | 98.86 (2511.08) | 107.95 (2741.98) | 9.09 (230.91) 9.2% |
| Sidewall Height inches (mm) | 7.23 (183.75) | 8.68 (220.5) | 1.45 (36.75) 20% |
| Revolutions per mile (km) | 640.9 (398.24) | 586.93 (364.7) | -53.97 (-33.54) -8.4% |
315/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.84 mph (35.15 km/h) |
| 25 mph (40.23 km/h) | 27.3 mph (43.93 km/h) |
| 30 mph (48.28 km/h) | 32.76 mph (52.72 km/h) |
| 35 mph (56.33 km/h) | 38.22 mph (61.51 km/h) |
| 40 mph (64.37 km/h) | 43.68 mph (70.29 km/h) |
| 45 mph (72.42 km/h) | 49.14 mph (79.08 km/h) |
| 50 mph (80.47 km/h) | 54.6 mph (87.87 km/h) |
| 55 mph (88.51 km/h) | 60.06 mph (96.65 km/h) |
| 60 mph (96.56 km/h) | 65.52 mph (105.44 km/h) |
| 65 mph (104.61 km/h) | 70.98 mph (114.23 km/h) |
| 70 mph (112.65 km/h) | 76.44 mph (123.01 km/h) |
| 75 mph (120.7 km/h) | 81.9 mph (131.8 km/h) |
| 80 mph (128.75 km/h) | 87.36 mph (140.59 km/h) |
| 85 mph (136.79 km/h) | 92.82 mph (149.37 km/h) |
| 90 mph (144.84 km/h) | 98.28 mph (158.16 km/h) |
| 95 mph (152.89 km/h) | 103.74 mph (166.95 km/h) |
| 100 mph (160.93 km/h) | 109.2 mph (175.73 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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