Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 46/19.5-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 16.72 (424.8) | -29.71 (-754.7) -64% |
| Width inches (mm) | 15.55 (395) | 1.81 (46) | -13.74 (-349) -88.4% |
| Circum. inches (mm) | 145.89 (3705.51) | 52.54 (1334.55) | -93.34 (-2370.96) -64% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 0.36 (9.2) | -12.86 (-326.55) -97.3% |
| Revolutions per mile (km) | 434.31 (269.87) | 1205.91 (749.32) | 771.6 (479.45) 177.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 7.2 mph (11.59 km/h) |
| 25 mph (40.23 km/h) | 9 mph (14.49 km/h) |
| 30 mph (48.28 km/h) | 10.8 mph (17.39 km/h) |
| 35 mph (56.33 km/h) | 12.61 mph (20.29 km/h) |
| 40 mph (64.37 km/h) | 14.41 mph (23.18 km/h) |
| 45 mph (72.42 km/h) | 16.21 mph (26.08 km/h) |
| 50 mph (80.47 km/h) | 18.01 mph (28.98 km/h) |
| 55 mph (88.51 km/h) | 19.81 mph (31.88 km/h) |
| 60 mph (96.56 km/h) | 21.61 mph (34.78 km/h) |
| 65 mph (104.61 km/h) | 23.41 mph (37.67 km/h) |
| 70 mph (112.65 km/h) | 25.21 mph (40.57 km/h) |
| 75 mph (120.7 km/h) | 27.01 mph (43.47 km/h) |
| 80 mph (128.75 km/h) | 28.81 mph (46.37 km/h) |
| 85 mph (136.79 km/h) | 30.61 mph (49.27 km/h) |
| 90 mph (144.84 km/h) | 32.41 mph (52.16 km/h) |
| 95 mph (152.89 km/h) | 34.21 mph (55.06 km/h) |
| 100 mph (160.93 km/h) | 36.02 mph (57.96 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
