Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-17 | 190/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.5 (647.8) | 25.23 (640.8) | -0.28 (-7) -1.1% |
| Width inches (mm) | 7.09 (180) | 7.48 (190) | 0.39 (10) 5.6% |
| Circum. inches (mm) | 80.12 (2035.12) | 79.26 (2013.13) | -0.87 (-21.99) -1.1% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.11 (104.5) | -0.14 (-3.5) -3.2% |
| Revolutions per mile (km) | 790.78 (491.37) | 799.42 (496.74) | 8.64 (5.37) 1.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.78 mph (31.84 km/h) |
| 25 mph (40.23 km/h) | 24.73 mph (39.8 km/h) |
| 30 mph (48.28 km/h) | 29.68 mph (47.76 km/h) |
| 35 mph (56.33 km/h) | 34.62 mph (55.72 km/h) |
| 40 mph (64.37 km/h) | 39.57 mph (63.68 km/h) |
| 45 mph (72.42 km/h) | 44.51 mph (71.64 km/h) |
| 50 mph (80.47 km/h) | 49.46 mph (79.6 km/h) |
| 55 mph (88.51 km/h) | 54.41 mph (87.56 km/h) |
| 60 mph (96.56 km/h) | 59.35 mph (95.52 km/h) |
| 65 mph (104.61 km/h) | 64.3 mph (103.48 km/h) |
| 70 mph (112.65 km/h) | 69.24 mph (111.44 km/h) |
| 75 mph (120.7 km/h) | 74.19 mph (119.4 km/h) |
| 80 mph (128.75 km/h) | 79.14 mph (127.36 km/h) |
| 85 mph (136.79 km/h) | 84.08 mph (135.32 km/h) |
| 90 mph (144.84 km/h) | 89.03 mph (143.28 km/h) |
| 95 mph (152.89 km/h) | 93.97 mph (151.24 km/h) |
| 100 mph (160.93 km/h) | 98.92 mph (159.2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2034 | 2363 | 2545 | 2658 | 2779 | 2865 | 2961 | 3073 | 3229 | 3385 | 3558 | 3697 | 3948 | 4225 | 4441 | 4580 | 4657 | 4943 | 5341 | 6207 |
Better Fuel Economy Factory Ratios Increased Power
