Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/90-18 | 290/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.4 (772.2) | 37.55 (953.8) | 7.15 (181.6) 23.5% |
| Width inches (mm) | 6.89 (175) | 11.42 (290) | 4.53 (115) 65.7% |
| Circum. inches (mm) | 95.51 (2425.94) | 117.97 (2996.45) | 22.46 (570.51) 23.5% |
| Sidewall Height inches (mm) | 6.2 (157.5) | 10.28 (261) | 4.07 (103.5) 65.7% |
| Revolutions per mile (km) | 663.39 (412.21) | 537.08 (333.73) | -126.31 (-78.48) -19% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.7 mph (39.76 km/h) |
| 25 mph (40.23 km/h) | 30.88 mph (49.7 km/h) |
| 30 mph (48.28 km/h) | 37.06 mph (59.63 km/h) |
| 35 mph (56.33 km/h) | 43.23 mph (69.57 km/h) |
| 40 mph (64.37 km/h) | 49.41 mph (79.51 km/h) |
| 45 mph (72.42 km/h) | 55.58 mph (89.45 km/h) |
| 50 mph (80.47 km/h) | 61.76 mph (99.39 km/h) |
| 55 mph (88.51 km/h) | 67.93 mph (109.33 km/h) |
| 60 mph (96.56 km/h) | 74.11 mph (119.27 km/h) |
| 65 mph (104.61 km/h) | 80.29 mph (129.21 km/h) |
| 70 mph (112.65 km/h) | 86.46 mph (139.15 km/h) |
| 75 mph (120.7 km/h) | 92.64 mph (149.09 km/h) |
| 80 mph (128.75 km/h) | 98.81 mph (159.03 km/h) |
| 85 mph (136.79 km/h) | 104.99 mph (168.96 km/h) |
| 90 mph (144.84 km/h) | 111.17 mph (178.9 km/h) |
| 95 mph (152.89 km/h) | 117.34 mph (188.84 km/h) |
| 100 mph (160.93 km/h) | 123.52 mph (198.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1367 | 1588 | 1710 | 1786 | 1867 | 1925 | 1989 | 2065 | 2169 | 2274 | 2390 | 2483 | 2652 | 2838 | 2984 | 3077 | 3129 | 3321 | 3589 | 4170 |
Better Fuel Economy Factory Ratios Increased Power
