Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 245/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 30.5 (774.8) | 0.1 (2.6) 0.3% |
| Width inches (mm) | 6.89 (175) | 9.65 (245) | 2.76 (70) 40% |
| Circum. inches (mm) | 95.51 (2425.94) | 95.83 (2434.11) | 0.32 (8.17) 0.3% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 6.75 (171.5) | 0.55 (14) 8.9% |
| Revolutions per mile (km) | 663.39 (412.21) | 661.16 (410.83) | -2.23 (-1.38) -0.3% |
245/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.07 mph (32.3 km/h) |
| 25 mph (40.23 km/h) | 25.08 mph (40.37 km/h) |
| 30 mph (48.28 km/h) | 30.1 mph (48.44 km/h) |
| 35 mph (56.33 km/h) | 35.12 mph (56.52 km/h) |
| 40 mph (64.37 km/h) | 40.13 mph (64.59 km/h) |
| 45 mph (72.42 km/h) | 45.15 mph (72.66 km/h) |
| 50 mph (80.47 km/h) | 50.17 mph (80.74 km/h) |
| 55 mph (88.51 km/h) | 55.19 mph (88.81 km/h) |
| 60 mph (96.56 km/h) | 60.2 mph (96.89 km/h) |
| 65 mph (104.61 km/h) | 65.22 mph (104.96 km/h) |
| 70 mph (112.65 km/h) | 70.24 mph (113.03 km/h) |
| 75 mph (120.7 km/h) | 75.25 mph (121.11 km/h) |
| 80 mph (128.75 km/h) | 80.27 mph (129.18 km/h) |
| 85 mph (136.79 km/h) | 85.29 mph (137.26 km/h) |
| 90 mph (144.84 km/h) | 90.3 mph (145.33 km/h) |
| 95 mph (152.89 km/h) | 95.32 mph (153.4 km/h) |
| 100 mph (160.93 km/h) | 100.34 mph (161.48 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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