Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 395/90-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 47.99 (1219) | 1.56 (39.5) 3.3% |
| Width inches (mm) | 15.55 (395) | 15.55 (395) | 0 (0) 0% |
| Circum. inches (mm) | 145.89 (3705.51) | 150.77 (3829.6) | 4.89 (124.09) 3.3% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 14 (355.5) | 0.78 (19.75) 5.9% |
| Revolutions per mile (km) | 434.31 (269.87) | 420.24 (261.12) | -14.07 (-8.74) -3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.67 mph (33.26 km/h) |
| 25 mph (40.23 km/h) | 25.84 mph (41.58 km/h) |
| 30 mph (48.28 km/h) | 31 mph (49.9 km/h) |
| 35 mph (56.33 km/h) | 36.17 mph (58.21 km/h) |
| 40 mph (64.37 km/h) | 41.34 mph (66.53 km/h) |
| 45 mph (72.42 km/h) | 46.51 mph (74.85 km/h) |
| 50 mph (80.47 km/h) | 51.67 mph (83.16 km/h) |
| 55 mph (88.51 km/h) | 56.84 mph (91.48 km/h) |
| 60 mph (96.56 km/h) | 62.01 mph (99.79 km/h) |
| 65 mph (104.61 km/h) | 67.18 mph (108.11 km/h) |
| 70 mph (112.65 km/h) | 72.34 mph (116.43 km/h) |
| 75 mph (120.7 km/h) | 77.51 mph (124.74 km/h) |
| 80 mph (128.75 km/h) | 82.68 mph (133.06 km/h) |
| 85 mph (136.79 km/h) | 87.85 mph (141.38 km/h) |
| 90 mph (144.84 km/h) | 93.01 mph (149.69 km/h) |
| 95 mph (152.89 km/h) | 98.18 mph (158.01 km/h) |
| 100 mph (160.93 km/h) | 103.35 mph (166.32 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
