Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/55-16 | 205/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.39 (670.4) | 25.26 (641.7) | -1.13 (-28.7) -4.3% |
| Width inches (mm) | 9.45 (240) | 8.07 (205) | -1.38 (-35) -14.6% |
| Circum. inches (mm) | 82.92 (2106.12) | 79.37 (2015.96) | -3.55 (-90.16) -4.3% |
| Sidewall Height inches (mm) | 5.2 (132) | 3.63 (92.25) | -1.56 (-39.75) -30.1% |
| Revolutions per mile (km) | 764.13 (474.81) | 798.3 (496.04) | 34.18 (21.24) 4.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.14 mph (30.81 km/h) |
| 25 mph (40.23 km/h) | 23.93 mph (38.51 km/h) |
| 30 mph (48.28 km/h) | 28.72 mph (46.21 km/h) |
| 35 mph (56.33 km/h) | 33.5 mph (53.92 km/h) |
| 40 mph (64.37 km/h) | 38.29 mph (61.62 km/h) |
| 45 mph (72.42 km/h) | 43.07 mph (69.32 km/h) |
| 50 mph (80.47 km/h) | 47.86 mph (77.02 km/h) |
| 55 mph (88.51 km/h) | 52.65 mph (84.72 km/h) |
| 60 mph (96.56 km/h) | 57.43 mph (92.43 km/h) |
| 65 mph (104.61 km/h) | 62.22 mph (100.13 km/h) |
| 70 mph (112.65 km/h) | 67 mph (107.83 km/h) |
| 75 mph (120.7 km/h) | 71.79 mph (115.53 km/h) |
| 80 mph (128.75 km/h) | 76.58 mph (123.24 km/h) |
| 85 mph (136.79 km/h) | 81.36 mph (130.94 km/h) |
| 90 mph (144.84 km/h) | 86.15 mph (138.64 km/h) |
| 95 mph (152.89 km/h) | 90.93 mph (146.34 km/h) |
| 100 mph (160.93 km/h) | 95.72 mph (154.05 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2032 | 2360 | 2542 | 2654 | 2775 | 2861 | 2957 | 3069 | 3225 | 3380 | 3553 | 3691 | 3942 | 4219 | 4435 | 4573 | 4651 | 4936 | 5334 | 6198 |
Better Fuel Economy Factory Ratios Increased Power
