Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/50-17 | 190/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.09 (611.8) | 25.23 (640.8) | 1.14 (29) 4.7% |
| Width inches (mm) | 7.09 (180) | 7.48 (190) | 0.39 (10) 5.6% |
| Circum. inches (mm) | 75.67 (1922.03) | 79.26 (2013.13) | 3.59 (91.11) 4.7% |
| Sidewall Height inches (mm) | 3.54 (90) | 4.11 (104.5) | 0.57 (14.5) 16.1% |
| Revolutions per mile (km) | 837.32 (520.28) | 799.42 (496.74) | -37.89 (-23.55) -4.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.95 mph (33.71 km/h) |
| 25 mph (40.23 km/h) | 26.19 mph (42.14 km/h) |
| 30 mph (48.28 km/h) | 31.42 mph (50.57 km/h) |
| 35 mph (56.33 km/h) | 36.66 mph (59 km/h) |
| 40 mph (64.37 km/h) | 41.9 mph (67.43 km/h) |
| 45 mph (72.42 km/h) | 47.13 mph (75.85 km/h) |
| 50 mph (80.47 km/h) | 52.37 mph (84.28 km/h) |
| 55 mph (88.51 km/h) | 57.61 mph (92.71 km/h) |
| 60 mph (96.56 km/h) | 62.84 mph (101.14 km/h) |
| 65 mph (104.61 km/h) | 68.08 mph (109.57 km/h) |
| 70 mph (112.65 km/h) | 73.32 mph (117.99 km/h) |
| 75 mph (120.7 km/h) | 78.56 mph (126.42 km/h) |
| 80 mph (128.75 km/h) | 83.79 mph (134.85 km/h) |
| 85 mph (136.79 km/h) | 89.03 mph (143.28 km/h) |
| 90 mph (144.84 km/h) | 94.27 mph (151.71 km/h) |
| 95 mph (152.89 km/h) | 99.5 mph (160.14 km/h) |
| 100 mph (160.93 km/h) | 104.74 mph (168.56 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
