Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 200/50-18 | 180/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.87 (657.2) | 24.8 (629.8) | -1.08 (-27.4) -4.2% |
| Width inches (mm) | 7.87 (200) | 7.09 (180) | -0.79 (-20) -10% |
| Circum. inches (mm) | 81.29 (2064.65) | 77.9 (1978.58) | -3.39 (-86.08) -4.2% |
| Sidewall Height inches (mm) | 3.94 (100) | 3.9 (99) | -0.04 (-1) -1% |
| Revolutions per mile (km) | 779.47 (484.34) | 813.39 (505.41) | 33.91 (21.07) 4.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.17 mph (30.85 km/h) |
| 25 mph (40.23 km/h) | 23.96 mph (38.56 km/h) |
| 30 mph (48.28 km/h) | 28.75 mph (46.27 km/h) |
| 35 mph (56.33 km/h) | 33.54 mph (53.98 km/h) |
| 40 mph (64.37 km/h) | 38.33 mph (61.69 km/h) |
| 45 mph (72.42 km/h) | 43.12 mph (69.4 km/h) |
| 50 mph (80.47 km/h) | 47.92 mph (77.11 km/h) |
| 55 mph (88.51 km/h) | 52.71 mph (84.82 km/h) |
| 60 mph (96.56 km/h) | 57.5 mph (92.54 km/h) |
| 65 mph (104.61 km/h) | 62.29 mph (100.25 km/h) |
| 70 mph (112.65 km/h) | 67.08 mph (107.96 km/h) |
| 75 mph (120.7 km/h) | 71.87 mph (115.67 km/h) |
| 80 mph (128.75 km/h) | 76.66 mph (123.38 km/h) |
| 85 mph (136.79 km/h) | 81.46 mph (131.09 km/h) |
| 90 mph (144.84 km/h) | 86.25 mph (138.8 km/h) |
| 95 mph (152.89 km/h) | 91.04 mph (146.51 km/h) |
| 100 mph (160.93 km/h) | 95.83 mph (154.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2070 | 2405 | 2590 | 2704 | 2827 | 2915 | 3012 | 3127 | 3285 | 3444 | 3620 | 3761 | 4017 | 4298 | 4519 | 4660 | 4739 | 5029 | 5435 | 6315 |
Better Fuel Economy Factory Ratios Increased Power
