Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/66-17 | 315/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.77 (781.6) | 34.36 (872.8) | 3.59 (91.2) 11.7% |
| Width inches (mm) | 10.43 (265) | 12.4 (315) | 1.97 (50) 18.9% |
| Circum. inches (mm) | 96.67 (2455.47) | 107.95 (2741.98) | 11.28 (286.51) 11.7% |
| Sidewall Height inches (mm) | 6.89 (174.9) | 8.68 (220.5) | 1.8 (45.6) 26.1% |
| Revolutions per mile (km) | 655.41 (407.25) | 586.93 (364.7) | -68.48 (-42.55) -10.4% |
315/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.33 mph (35.94 km/h) |
| 25 mph (40.23 km/h) | 27.92 mph (44.93 km/h) |
| 30 mph (48.28 km/h) | 33.5 mph (53.91 km/h) |
| 35 mph (56.33 km/h) | 39.08 mph (62.9 km/h) |
| 40 mph (64.37 km/h) | 44.67 mph (71.89 km/h) |
| 45 mph (72.42 km/h) | 50.25 mph (80.87 km/h) |
| 50 mph (80.47 km/h) | 55.83 mph (89.86 km/h) |
| 55 mph (88.51 km/h) | 61.42 mph (98.84 km/h) |
| 60 mph (96.56 km/h) | 67 mph (107.83 km/h) |
| 65 mph (104.61 km/h) | 72.58 mph (116.81 km/h) |
| 70 mph (112.65 km/h) | 78.17 mph (125.8 km/h) |
| 75 mph (120.7 km/h) | 83.75 mph (134.78 km/h) |
| 80 mph (128.75 km/h) | 89.33 mph (143.77 km/h) |
| 85 mph (136.79 km/h) | 94.92 mph (152.76 km/h) |
| 90 mph (144.84 km/h) | 100.5 mph (161.74 km/h) |
| 95 mph (152.89 km/h) | 106.08 mph (170.73 km/h) |
| 100 mph (160.93 km/h) | 111.67 mph (179.71 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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