Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 290/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 34.13 (866.8) | 3.72 (94.6) 12.3% |
| Width inches (mm) | 6.89 (175) | 11.42 (290) | 4.53 (115) 65.7% |
| Circum. inches (mm) | 95.51 (2425.94) | 107.21 (2723.13) | 11.7 (297.19) 12.3% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 8.56 (217.5) | 2.36 (60) 38.1% |
| Revolutions per mile (km) | 663.39 (412.21) | 590.99 (367.22) | -72.4 (-44.99) -10.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.45 mph (36.13 km/h) |
| 25 mph (40.23 km/h) | 28.06 mph (45.16 km/h) |
| 30 mph (48.28 km/h) | 33.68 mph (54.2 km/h) |
| 35 mph (56.33 km/h) | 39.29 mph (63.23 km/h) |
| 40 mph (64.37 km/h) | 44.9 mph (72.26 km/h) |
| 45 mph (72.42 km/h) | 50.51 mph (81.29 km/h) |
| 50 mph (80.47 km/h) | 56.13 mph (90.33 km/h) |
| 55 mph (88.51 km/h) | 61.74 mph (99.36 km/h) |
| 60 mph (96.56 km/h) | 67.35 mph (108.39 km/h) |
| 65 mph (104.61 km/h) | 72.96 mph (117.42 km/h) |
| 70 mph (112.65 km/h) | 78.58 mph (126.46 km/h) |
| 75 mph (120.7 km/h) | 84.19 mph (135.49 km/h) |
| 80 mph (128.75 km/h) | 89.8 mph (144.52 km/h) |
| 85 mph (136.79 km/h) | 95.41 mph (153.55 km/h) |
| 90 mph (144.84 km/h) | 101.03 mph (162.59 km/h) |
| 95 mph (152.89 km/h) | 106.64 mph (171.62 km/h) |
| 100 mph (160.93 km/h) | 112.25 mph (180.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1504 | 1747 | 1882 | 1965 | 2054 | 2118 | 2189 | 2272 | 2387 | 2502 | 2630 | 2733 | 2918 | 3123 | 3283 | 3386 | 3443 | 3654 | 3949 | 4589 |
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