Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-18 | 405/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.54 (674.2) | 40.32 (1024.2) | 13.78 (350) 51.9% |
| Width inches (mm) | 6.1 (155) | 15.94 (405) | 9.84 (250) 161.3% |
| Circum. inches (mm) | 83.39 (2118.06) | 126.68 (3217.62) | 43.29 (1099.56) 51.9% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 11.16 (283.5) | 6.89 (175) 161.3% |
| Revolutions per mile (km) | 759.82 (472.13) | 500.17 (310.79) | -259.65 (-161.34) -34.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 30.38 mph (48.9 km/h) |
| 25 mph (40.23 km/h) | 37.98 mph (61.12 km/h) |
| 30 mph (48.28 km/h) | 45.57 mph (73.34 km/h) |
| 35 mph (56.33 km/h) | 53.17 mph (85.57 km/h) |
| 40 mph (64.37 km/h) | 60.77 mph (97.79 km/h) |
| 45 mph (72.42 km/h) | 68.36 mph (110.02 km/h) |
| 50 mph (80.47 km/h) | 75.96 mph (122.24 km/h) |
| 55 mph (88.51 km/h) | 83.55 mph (134.46 km/h) |
| 60 mph (96.56 km/h) | 91.15 mph (146.69 km/h) |
| 65 mph (104.61 km/h) | 98.74 mph (158.91 km/h) |
| 70 mph (112.65 km/h) | 106.34 mph (171.14 km/h) |
| 75 mph (120.7 km/h) | 113.94 mph (183.36 km/h) |
| 80 mph (128.75 km/h) | 121.53 mph (195.59 km/h) |
| 85 mph (136.79 km/h) | 129.13 mph (207.81 km/h) |
| 90 mph (144.84 km/h) | 136.72 mph (220.03 km/h) |
| 95 mph (152.89 km/h) | 144.32 mph (232.26 km/h) |
| 100 mph (160.93 km/h) | 151.91 mph (244.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1273 | 1479 | 1592 | 1663 | 1739 | 1793 | 1852 | 1923 | 2020 | 2118 | 2226 | 2313 | 2470 | 2643 | 2779 | 2865 | 2914 | 3093 | 3342 | 3883 |
Better Fuel Economy Factory Ratios Increased Power
