Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 110/90-18 | 120/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.8 (655.2) | 26.5 (673.2) | 0.71 (18) 2.7% |
| Width inches (mm) | 4.33 (110) | 4.72 (120) | 0.39 (10) 9.1% |
| Circum. inches (mm) | 81.04 (2058.37) | 83.26 (2114.92) | 2.23 (56.55) 2.7% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.25 (108) | 0.35 (9) 9.1% |
| Revolutions per mile (km) | 781.85 (485.82) | 760.95 (472.83) | -20.91 (-12.99) -2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.55 mph (33.07 km/h) |
| 25 mph (40.23 km/h) | 25.69 mph (41.34 km/h) |
| 30 mph (48.28 km/h) | 30.82 mph (49.61 km/h) |
| 35 mph (56.33 km/h) | 35.96 mph (57.87 km/h) |
| 40 mph (64.37 km/h) | 41.1 mph (66.14 km/h) |
| 45 mph (72.42 km/h) | 46.24 mph (74.41 km/h) |
| 50 mph (80.47 km/h) | 51.37 mph (82.68 km/h) |
| 55 mph (88.51 km/h) | 56.51 mph (90.95 km/h) |
| 60 mph (96.56 km/h) | 61.65 mph (99.21 km/h) |
| 65 mph (104.61 km/h) | 66.79 mph (107.48 km/h) |
| 70 mph (112.65 km/h) | 71.92 mph (115.75 km/h) |
| 75 mph (120.7 km/h) | 77.06 mph (124.02 km/h) |
| 80 mph (128.75 km/h) | 82.2 mph (132.28 km/h) |
| 85 mph (136.79 km/h) | 87.34 mph (140.55 km/h) |
| 90 mph (144.84 km/h) | 92.47 mph (148.82 km/h) |
| 95 mph (152.89 km/h) | 97.61 mph (157.09 km/h) |
| 100 mph (160.93 km/h) | 102.75 mph (165.36 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1936 | 2250 | 2423 | 2530 | 2645 | 2728 | 2818 | 2925 | 3074 | 3222 | 3387 | 3519 | 3758 | 4021 | 4227 | 4359 | 4433 | 4705 | 5084 | 5908 |
Better Fuel Economy Factory Ratios Increased Power
