Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 210/40-18 | 240/30-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.61 (625.2) | 23.67 (601.2) | -0.94 (-24) -3.8% |
| Width inches (mm) | 8.27 (210) | 9.45 (240) | 1.18 (30) 14.3% |
| Circum. inches (mm) | 77.33 (1964.12) | 74.36 (1888.73) | -2.97 (-75.4) -3.8% |
| Sidewall Height inches (mm) | 3.31 (84) | 2.83 (72) | -0.47 (-12) -14.3% |
| Revolutions per mile (km) | 819.37 (509.13) | 852.08 (529.46) | 32.71 (20.32) 4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.23 mph (30.95 km/h) |
| 25 mph (40.23 km/h) | 24.04 mph (38.69 km/h) |
| 30 mph (48.28 km/h) | 28.85 mph (46.43 km/h) |
| 35 mph (56.33 km/h) | 33.66 mph (54.16 km/h) |
| 40 mph (64.37 km/h) | 38.46 mph (61.9 km/h) |
| 45 mph (72.42 km/h) | 43.27 mph (69.64 km/h) |
| 50 mph (80.47 km/h) | 48.08 mph (77.38 km/h) |
| 55 mph (88.51 km/h) | 52.89 mph (85.12 km/h) |
| 60 mph (96.56 km/h) | 57.7 mph (92.85 km/h) |
| 65 mph (104.61 km/h) | 62.5 mph (100.59 km/h) |
| 70 mph (112.65 km/h) | 67.31 mph (108.33 km/h) |
| 75 mph (120.7 km/h) | 72.12 mph (116.07 km/h) |
| 80 mph (128.75 km/h) | 76.93 mph (123.81 km/h) |
| 85 mph (136.79 km/h) | 81.74 mph (131.54 km/h) |
| 90 mph (144.84 km/h) | 86.55 mph (139.28 km/h) |
| 95 mph (152.89 km/h) | 91.35 mph (147.02 km/h) |
| 100 mph (160.93 km/h) | 96.16 mph (154.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2168 | 2519 | 2713 | 2833 | 2962 | 3054 | 3156 | 3276 | 3442 | 3608 | 3792 | 3940 | 4208 | 4503 | 4734 | 4881 | 4964 | 5269 | 5693 | 6616 |
Better Fuel Economy Factory Ratios Increased Power
