Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/55-16 | 240/55-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.39 (670.4) | 28.39 (721.2) | 2 (50.8) 7.6% |
| Width inches (mm) | 9.45 (240) | 9.45 (240) | 0 (0) 0% |
| Circum. inches (mm) | 82.92 (2106.12) | 89.2 (2265.72) | 6.28 (159.59) 7.6% |
| Sidewall Height inches (mm) | 5.2 (132) | 5.2 (132) | 0 (0) 0% |
| Revolutions per mile (km) | 764.13 (474.81) | 710.3 (441.36) | -53.82 (-33.44) -7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.52 mph (34.63 km/h) |
| 25 mph (40.23 km/h) | 26.89 mph (43.28 km/h) |
| 30 mph (48.28 km/h) | 32.27 mph (51.94 km/h) |
| 35 mph (56.33 km/h) | 37.65 mph (60.6 km/h) |
| 40 mph (64.37 km/h) | 43.03 mph (69.25 km/h) |
| 45 mph (72.42 km/h) | 48.41 mph (77.91 km/h) |
| 50 mph (80.47 km/h) | 53.79 mph (86.56 km/h) |
| 55 mph (88.51 km/h) | 59.17 mph (95.22 km/h) |
| 60 mph (96.56 km/h) | 64.55 mph (103.88 km/h) |
| 65 mph (104.61 km/h) | 69.93 mph (112.53 km/h) |
| 70 mph (112.65 km/h) | 75.3 mph (121.19 km/h) |
| 75 mph (120.7 km/h) | 80.68 mph (129.85 km/h) |
| 80 mph (128.75 km/h) | 86.06 mph (138.5 km/h) |
| 85 mph (136.79 km/h) | 91.44 mph (147.16 km/h) |
| 90 mph (144.84 km/h) | 96.82 mph (155.82 km/h) |
| 95 mph (152.89 km/h) | 102.2 mph (164.47 km/h) |
| 100 mph (160.93 km/h) | 107.58 mph (173.13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1808 | 2100 | 2261 | 2361 | 2469 | 2546 | 2631 | 2731 | 2869 | 3008 | 3161 | 3284 | 3507 | 3754 | 3946 | 4069 | 4138 | 4392 | 4746 | 5515 |
Better Fuel Economy Factory Ratios Increased Power
