Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/80-17 | 245/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.43 (823.8) | 30.5 (774.8) | -1.93 (-49) -5.9% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 101.89 (2588.04) | 95.83 (2434.11) | -6.06 (-153.94) -5.9% |
| Sidewall Height inches (mm) | 7.72 (196) | 6.75 (171.5) | -0.96 (-24.5) -12.5% |
| Revolutions per mile (km) | 621.84 (386.39) | 661.16 (410.83) | 39.33 (24.44) 6.3% |
245/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.81 mph (30.27 km/h) |
| 25 mph (40.23 km/h) | 23.51 mph (37.84 km/h) |
| 30 mph (48.28 km/h) | 28.22 mph (45.41 km/h) |
| 35 mph (56.33 km/h) | 32.92 mph (52.98 km/h) |
| 40 mph (64.37 km/h) | 37.62 mph (60.54 km/h) |
| 45 mph (72.42 km/h) | 42.32 mph (68.11 km/h) |
| 50 mph (80.47 km/h) | 47.03 mph (75.68 km/h) |
| 55 mph (88.51 km/h) | 51.73 mph (83.25 km/h) |
| 60 mph (96.56 km/h) | 56.43 mph (90.82 km/h) |
| 65 mph (104.61 km/h) | 61.13 mph (98.39 km/h) |
| 70 mph (112.65 km/h) | 65.84 mph (105.95 km/h) |
| 75 mph (120.7 km/h) | 70.54 mph (113.52 km/h) |
| 80 mph (128.75 km/h) | 75.24 mph (121.09 km/h) |
| 85 mph (136.79 km/h) | 79.94 mph (128.66 km/h) |
| 90 mph (144.84 km/h) | 84.65 mph (136.23 km/h) |
| 95 mph (152.89 km/h) | 89.35 mph (143.79 km/h) |
| 100 mph (160.93 km/h) | 94.05 mph (151.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1683 | 1955 | 2105 | 2198 | 2298 | 2370 | 2449 | 2542 | 2671 | 2799 | 2943 | 3057 | 3265 | 3494 | 3673 | 3787 | 3852 | 4088 | 4418 | 5134 |
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