Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/60-18 | 395/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.32 (643.2) | 36.66 (931.2) | 11.34 (288) 44.8% |
| Width inches (mm) | 6.1 (155) | 15.55 (395) | 9.45 (240) 154.8% |
| Circum. inches (mm) | 79.55 (2020.67) | 115.18 (2925.45) | 35.62 (904.78) 44.8% |
| Sidewall Height inches (mm) | 3.66 (93) | 9.33 (237) | 5.67 (144) 154.8% |
| Revolutions per mile (km) | 796.44 (494.88) | 550.12 (341.83) | -246.32 (-153.06) -30.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.96 mph (46.6 km/h) |
| 25 mph (40.23 km/h) | 36.19 mph (58.25 km/h) |
| 30 mph (48.28 km/h) | 43.43 mph (69.9 km/h) |
| 35 mph (56.33 km/h) | 50.67 mph (81.55 km/h) |
| 40 mph (64.37 km/h) | 57.91 mph (93.2 km/h) |
| 45 mph (72.42 km/h) | 65.15 mph (104.85 km/h) |
| 50 mph (80.47 km/h) | 72.39 mph (116.5 km/h) |
| 55 mph (88.51 km/h) | 79.63 mph (128.15 km/h) |
| 60 mph (96.56 km/h) | 86.87 mph (139.8 km/h) |
| 65 mph (104.61 km/h) | 94.1 mph (151.45 km/h) |
| 70 mph (112.65 km/h) | 101.34 mph (163.1 km/h) |
| 75 mph (120.7 km/h) | 108.58 mph (174.75 km/h) |
| 80 mph (128.75 km/h) | 115.82 mph (186.4 km/h) |
| 85 mph (136.79 km/h) | 123.06 mph (198.05 km/h) |
| 90 mph (144.84 km/h) | 130.3 mph (209.7 km/h) |
| 95 mph (152.89 km/h) | 137.54 mph (221.35 km/h) |
| 100 mph (160.93 km/h) | 144.78 mph (233 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1400 | 1626 | 1751 | 1829 | 1912 | 1972 | 2037 | 2115 | 2222 | 2329 | 2448 | 2544 | 2716 | 2907 | 3056 | 3151 | 3205 | 3402 | 3676 | 4271 |
Better Fuel Economy Factory Ratios Increased Power
