Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/40-18 | 240/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.56 (649.2) | 24.61 (625.2) | -0.94 (-24) -3.7% |
| Width inches (mm) | 9.45 (240) | 9.45 (240) | 0 (0) 0% |
| Circum. inches (mm) | 80.3 (2039.52) | 77.33 (1964.12) | -2.97 (-75.4) -3.7% |
| Sidewall Height inches (mm) | 3.78 (96) | 3.31 (84) | -0.47 (-12) -12.5% |
| Revolutions per mile (km) | 789.08 (490.31) | 819.37 (509.13) | 30.29 (18.82) 3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.26 mph (31 km/h) |
| 25 mph (40.23 km/h) | 24.08 mph (38.75 km/h) |
| 30 mph (48.28 km/h) | 28.89 mph (46.5 km/h) |
| 35 mph (56.33 km/h) | 33.71 mph (54.24 km/h) |
| 40 mph (64.37 km/h) | 38.52 mph (61.99 km/h) |
| 45 mph (72.42 km/h) | 43.34 mph (69.74 km/h) |
| 50 mph (80.47 km/h) | 48.15 mph (77.49 km/h) |
| 55 mph (88.51 km/h) | 52.97 mph (85.24 km/h) |
| 60 mph (96.56 km/h) | 57.78 mph (92.99 km/h) |
| 65 mph (104.61 km/h) | 62.6 mph (100.74 km/h) |
| 70 mph (112.65 km/h) | 67.41 mph (108.49 km/h) |
| 75 mph (120.7 km/h) | 72.23 mph (116.24 km/h) |
| 80 mph (128.75 km/h) | 77.04 mph (123.99 km/h) |
| 85 mph (136.79 km/h) | 81.86 mph (131.74 km/h) |
| 90 mph (144.84 km/h) | 86.67 mph (139.49 km/h) |
| 95 mph (152.89 km/h) | 91.49 mph (147.24 km/h) |
| 100 mph (160.93 km/h) | 96.3 mph (154.99 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2085 | 2422 | 2609 | 2724 | 2848 | 2937 | 3035 | 3150 | 3310 | 3469 | 3647 | 3789 | 4046 | 4330 | 4552 | 4694 | 4774 | 5066 | 5475 | 6362 |
Better Fuel Economy Factory Ratios Increased Power
