Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 150/70-18 | 120/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.27 (667.2) | 26.5 (673.2) | 0.24 (6) 0.9% |
| Width inches (mm) | 5.91 (150) | 4.72 (120) | -1.18 (-30) -20% |
| Circum. inches (mm) | 82.52 (2096.07) | 83.26 (2114.92) | 0.74 (18.85) 0.9% |
| Sidewall Height inches (mm) | 4.13 (105) | 4.25 (108) | 0.12 (3) 2.9% |
| Revolutions per mile (km) | 767.79 (477.08) | 760.95 (472.83) | -6.84 (-4.25) -0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.18 mph (32.48 km/h) |
| 25 mph (40.23 km/h) | 25.22 mph (40.6 km/h) |
| 30 mph (48.28 km/h) | 30.27 mph (48.71 km/h) |
| 35 mph (56.33 km/h) | 35.31 mph (56.83 km/h) |
| 40 mph (64.37 km/h) | 40.36 mph (64.95 km/h) |
| 45 mph (72.42 km/h) | 45.4 mph (73.07 km/h) |
| 50 mph (80.47 km/h) | 50.45 mph (81.19 km/h) |
| 55 mph (88.51 km/h) | 55.49 mph (89.31 km/h) |
| 60 mph (96.56 km/h) | 60.54 mph (97.43 km/h) |
| 65 mph (104.61 km/h) | 65.58 mph (105.55 km/h) |
| 70 mph (112.65 km/h) | 70.63 mph (113.67 km/h) |
| 75 mph (120.7 km/h) | 75.67 mph (121.79 km/h) |
| 80 mph (128.75 km/h) | 80.72 mph (129.91 km/h) |
| 85 mph (136.79 km/h) | 85.76 mph (138.02 km/h) |
| 90 mph (144.84 km/h) | 90.81 mph (146.14 km/h) |
| 95 mph (152.89 km/h) | 95.85 mph (154.26 km/h) |
| 100 mph (160.93 km/h) | 100.9 mph (162.38 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
