Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 200/50-18 | 185/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.87 (657.2) | 26.01 (660.7) | 0.14 (3.5) 0.5% |
| Width inches (mm) | 7.87 (200) | 7.28 (185) | -0.59 (-15) -7.5% |
| Circum. inches (mm) | 81.29 (2064.65) | 81.72 (2075.65) | 0.43 (11) 0.5% |
| Sidewall Height inches (mm) | 3.94 (100) | 4.01 (101.75) | 0.07 (1.75) 1.8% |
| Revolutions per mile (km) | 779.47 (484.34) | 775.34 (481.78) | -4.13 (-2.57) -0.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.11 mph (32.36 km/h) |
| 25 mph (40.23 km/h) | 25.13 mph (40.45 km/h) |
| 30 mph (48.28 km/h) | 30.16 mph (48.54 km/h) |
| 35 mph (56.33 km/h) | 35.19 mph (56.63 km/h) |
| 40 mph (64.37 km/h) | 40.21 mph (64.72 km/h) |
| 45 mph (72.42 km/h) | 45.24 mph (72.81 km/h) |
| 50 mph (80.47 km/h) | 50.27 mph (80.9 km/h) |
| 55 mph (88.51 km/h) | 55.29 mph (88.99 km/h) |
| 60 mph (96.56 km/h) | 60.32 mph (97.08 km/h) |
| 65 mph (104.61 km/h) | 65.35 mph (105.16 km/h) |
| 70 mph (112.65 km/h) | 70.37 mph (113.25 km/h) |
| 75 mph (120.7 km/h) | 75.4 mph (121.34 km/h) |
| 80 mph (128.75 km/h) | 80.43 mph (129.43 km/h) |
| 85 mph (136.79 km/h) | 85.45 mph (137.52 km/h) |
| 90 mph (144.84 km/h) | 90.48 mph (145.61 km/h) |
| 95 mph (152.89 km/h) | 95.51 mph (153.7 km/h) |
| 100 mph (160.93 km/h) | 100.53 mph (161.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1973 | 2292 | 2468 | 2578 | 2695 | 2779 | 2871 | 2981 | 3132 | 3283 | 3451 | 3585 | 3829 | 4097 | 4307 | 4442 | 4517 | 4794 | 5180 | 6020 |
Better Fuel Economy Factory Ratios Increased Power
