Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 110/90-18 | 140/80-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.8 (655.2) | 26.82 (681.2) | 1.02 (26) 4% |
| Width inches (mm) | 4.33 (110) | 5.51 (140) | 1.18 (30) 27.3% |
| Circum. inches (mm) | 81.04 (2058.37) | 84.25 (2140.05) | 3.22 (81.68) 4% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.41 (112) | 0.51 (13) 13.1% |
| Revolutions per mile (km) | 781.85 (485.82) | 752.01 (467.28) | -29.84 (-18.54) -3.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.79 mph (33.46 km/h) |
| 25 mph (40.23 km/h) | 25.99 mph (41.83 km/h) |
| 30 mph (48.28 km/h) | 31.19 mph (50.2 km/h) |
| 35 mph (56.33 km/h) | 36.39 mph (58.56 km/h) |
| 40 mph (64.37 km/h) | 41.59 mph (66.93 km/h) |
| 45 mph (72.42 km/h) | 46.79 mph (75.29 km/h) |
| 50 mph (80.47 km/h) | 51.98 mph (83.66 km/h) |
| 55 mph (88.51 km/h) | 57.18 mph (92.03 km/h) |
| 60 mph (96.56 km/h) | 62.38 mph (100.39 km/h) |
| 65 mph (104.61 km/h) | 67.58 mph (108.76 km/h) |
| 70 mph (112.65 km/h) | 72.78 mph (117.12 km/h) |
| 75 mph (120.7 km/h) | 77.98 mph (125.49 km/h) |
| 80 mph (128.75 km/h) | 83.17 mph (133.86 km/h) |
| 85 mph (136.79 km/h) | 88.37 mph (142.22 km/h) |
| 90 mph (144.84 km/h) | 93.57 mph (150.59 km/h) |
| 95 mph (152.89 km/h) | 98.77 mph (158.95 km/h) |
| 100 mph (160.93 km/h) | 103.97 mph (167.32 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1914 | 2223 | 2394 | 2500 | 2614 | 2696 | 2785 | 2891 | 3038 | 3184 | 3347 | 3477 | 3713 | 3974 | 4178 | 4308 | 4381 | 4650 | 5025 | 5839 |
Better Fuel Economy Factory Ratios Increased Power
