Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 240/40-18 | 250/35-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.56 (649.2) | 24.89 (632.2) | -0.67 (-17) -2.6% |
| Width inches (mm) | 9.45 (240) | 9.84 (250) | 0.39 (10) 4.2% |
| Circum. inches (mm) | 80.3 (2039.52) | 78.19 (1986.11) | -2.1 (-53.41) -2.6% |
| Sidewall Height inches (mm) | 3.78 (96) | 3.44 (87.5) | -0.33 (-8.5) -8.9% |
| Revolutions per mile (km) | 789.08 (490.31) | 810.3 (503.49) | 21.22 (13.18) 2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.48 mph (31.34 km/h) |
| 25 mph (40.23 km/h) | 24.35 mph (39.18 km/h) |
| 30 mph (48.28 km/h) | 29.21 mph (47.02 km/h) |
| 35 mph (56.33 km/h) | 34.08 mph (54.85 km/h) |
| 40 mph (64.37 km/h) | 38.95 mph (62.69 km/h) |
| 45 mph (72.42 km/h) | 43.82 mph (70.52 km/h) |
| 50 mph (80.47 km/h) | 48.69 mph (78.36 km/h) |
| 55 mph (88.51 km/h) | 53.56 mph (86.2 km/h) |
| 60 mph (96.56 km/h) | 58.43 mph (94.03 km/h) |
| 65 mph (104.61 km/h) | 63.3 mph (101.87 km/h) |
| 70 mph (112.65 km/h) | 68.17 mph (109.7 km/h) |
| 75 mph (120.7 km/h) | 73.04 mph (117.54 km/h) |
| 80 mph (128.75 km/h) | 77.91 mph (125.38 km/h) |
| 85 mph (136.79 km/h) | 82.77 mph (133.21 km/h) |
| 90 mph (144.84 km/h) | 87.64 mph (141.05 km/h) |
| 95 mph (152.89 km/h) | 92.51 mph (148.88 km/h) |
| 100 mph (160.93 km/h) | 97.38 mph (156.72 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2062 | 2395 | 2580 | 2694 | 2817 | 2904 | 3001 | 3115 | 3273 | 3431 | 3606 | 3747 | 4001 | 4282 | 4501 | 4642 | 4721 | 5010 | 5414 | 6291 |
Better Fuel Economy Factory Ratios Increased Power
