Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 365/90-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 45.87 (1165) | -0.57 (-14.5) -1.2% |
| Width inches (mm) | 15.55 (395) | 14.37 (365) | -1.18 (-30) -7.6% |
| Circum. inches (mm) | 145.89 (3705.51) | 144.09 (3659.96) | -1.79 (-45.55) -1.2% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 12.93 (328.5) | -0.29 (-7.25) -2.2% |
| Revolutions per mile (km) | 434.31 (269.87) | 439.72 (273.23) | 5.41 (3.36) 1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.75 mph (31.79 km/h) |
| 25 mph (40.23 km/h) | 24.69 mph (39.74 km/h) |
| 30 mph (48.28 km/h) | 29.63 mph (47.69 km/h) |
| 35 mph (56.33 km/h) | 34.57 mph (55.63 km/h) |
| 40 mph (64.37 km/h) | 39.51 mph (63.58 km/h) |
| 45 mph (72.42 km/h) | 44.45 mph (71.53 km/h) |
| 50 mph (80.47 km/h) | 49.39 mph (79.48 km/h) |
| 55 mph (88.51 km/h) | 54.32 mph (87.43 km/h) |
| 60 mph (96.56 km/h) | 59.26 mph (95.37 km/h) |
| 65 mph (104.61 km/h) | 64.2 mph (103.32 km/h) |
| 70 mph (112.65 km/h) | 69.14 mph (111.27 km/h) |
| 75 mph (120.7 km/h) | 74.08 mph (119.22 km/h) |
| 80 mph (128.75 km/h) | 79.02 mph (127.17 km/h) |
| 85 mph (136.79 km/h) | 83.96 mph (135.11 km/h) |
| 90 mph (144.84 km/h) | 88.89 mph (143.06 km/h) |
| 95 mph (152.89 km/h) | 93.83 mph (151.01 km/h) |
| 100 mph (160.93 km/h) | 98.77 mph (158.96 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
