Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 365/80-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 42.99 (1092) | -3.44 (-87.5) -7.4% |
| Width inches (mm) | 15.55 (395) | 14.37 (365) | -1.18 (-30) -7.6% |
| Circum. inches (mm) | 145.89 (3705.51) | 135.06 (3430.62) | -10.82 (-274.89) -7.4% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 11.5 (292) | -1.72 (-43.75) -13% |
| Revolutions per mile (km) | 434.31 (269.87) | 469.11 (291.49) | 34.8 (21.62) 8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.52 mph (29.8 km/h) |
| 25 mph (40.23 km/h) | 23.15 mph (37.25 km/h) |
| 30 mph (48.28 km/h) | 27.77 mph (44.7 km/h) |
| 35 mph (56.33 km/h) | 32.4 mph (52.15 km/h) |
| 40 mph (64.37 km/h) | 37.03 mph (59.6 km/h) |
| 45 mph (72.42 km/h) | 41.66 mph (67.05 km/h) |
| 50 mph (80.47 km/h) | 46.29 mph (74.5 km/h) |
| 55 mph (88.51 km/h) | 50.92 mph (81.95 km/h) |
| 60 mph (96.56 km/h) | 55.55 mph (89.4 km/h) |
| 65 mph (104.61 km/h) | 60.18 mph (96.85 km/h) |
| 70 mph (112.65 km/h) | 64.81 mph (104.3 km/h) |
| 75 mph (120.7 km/h) | 69.44 mph (111.75 km/h) |
| 80 mph (128.75 km/h) | 74.07 mph (119.2 km/h) |
| 85 mph (136.79 km/h) | 78.69 mph (126.65 km/h) |
| 90 mph (144.84 km/h) | 83.32 mph (134.1 km/h) |
| 95 mph (152.89 km/h) | 87.95 mph (141.55 km/h) |
| 100 mph (160.93 km/h) | 92.58 mph (149 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1194 | 1387 | 1494 | 1560 | 1631 | 1681 | 1737 | 1803 | 1895 | 1986 | 2088 | 2169 | 2316 | 2479 | 2606 | 2687 | 2733 | 2901 | 3134 | 3642 |
Better Fuel Economy Factory Ratios Increased Power
