Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/55-16 | 240/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.39 (670.4) | 25.56 (649.2) | -0.83 (-21.2) -3.2% |
| Width inches (mm) | 9.45 (240) | 9.45 (240) | 0 (0) 0% |
| Circum. inches (mm) | 82.92 (2106.12) | 80.3 (2039.52) | -2.62 (-66.6) -3.2% |
| Sidewall Height inches (mm) | 5.2 (132) | 3.78 (96) | -1.42 (-36) -27.3% |
| Revolutions per mile (km) | 764.13 (474.81) | 789.08 (490.31) | 24.95 (15.51) 3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.37 mph (31.17 km/h) |
| 25 mph (40.23 km/h) | 24.21 mph (38.96 km/h) |
| 30 mph (48.28 km/h) | 29.05 mph (46.75 km/h) |
| 35 mph (56.33 km/h) | 33.89 mph (54.55 km/h) |
| 40 mph (64.37 km/h) | 38.74 mph (62.34 km/h) |
| 45 mph (72.42 km/h) | 43.58 mph (70.13 km/h) |
| 50 mph (80.47 km/h) | 48.42 mph (77.92 km/h) |
| 55 mph (88.51 km/h) | 53.26 mph (85.72 km/h) |
| 60 mph (96.56 km/h) | 58.1 mph (93.51 km/h) |
| 65 mph (104.61 km/h) | 62.94 mph (101.3 km/h) |
| 70 mph (112.65 km/h) | 67.79 mph (109.09 km/h) |
| 75 mph (120.7 km/h) | 72.63 mph (116.88 km/h) |
| 80 mph (128.75 km/h) | 77.47 mph (124.68 km/h) |
| 85 mph (136.79 km/h) | 82.31 mph (132.47 km/h) |
| 90 mph (144.84 km/h) | 87.15 mph (140.26 km/h) |
| 95 mph (152.89 km/h) | 92 mph (148.05 km/h) |
| 100 mph (160.93 km/h) | 96.84 mph (155.85 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | 2333 | 2512 | 2623 | 2743 | 2828 | 2922 | 3033 | 3187 | 3341 | 3512 | 3649 | 3896 | 4170 | 4384 | 4520 | 4597 | 4879 | 5272 | 6127 |
Better Fuel Economy Factory Ratios Increased Power
