Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 355/80-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 42.36 (1076) | -4.07 (-103.5) -8.8% |
| Width inches (mm) | 15.55 (395) | 13.98 (355) | -1.57 (-40) -10.1% |
| Circum. inches (mm) | 145.89 (3705.51) | 133.08 (3380.35) | -12.8 (-325.15) -8.8% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 11.18 (284) | -2.04 (-51.75) -15.4% |
| Revolutions per mile (km) | 434.31 (269.87) | 476.09 (295.83) | 41.78 (25.96) 9.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.25 mph (29.36 km/h) |
| 25 mph (40.23 km/h) | 22.81 mph (36.7 km/h) |
| 30 mph (48.28 km/h) | 27.37 mph (44.04 km/h) |
| 35 mph (56.33 km/h) | 31.93 mph (51.38 km/h) |
| 40 mph (64.37 km/h) | 36.49 mph (58.73 km/h) |
| 45 mph (72.42 km/h) | 41.05 mph (66.07 km/h) |
| 50 mph (80.47 km/h) | 45.61 mph (73.41 km/h) |
| 55 mph (88.51 km/h) | 50.17 mph (80.75 km/h) |
| 60 mph (96.56 km/h) | 54.74 mph (88.09 km/h) |
| 65 mph (104.61 km/h) | 59.3 mph (95.43 km/h) |
| 70 mph (112.65 km/h) | 63.86 mph (102.77 km/h) |
| 75 mph (120.7 km/h) | 68.42 mph (110.11 km/h) |
| 80 mph (128.75 km/h) | 72.98 mph (117.45 km/h) |
| 85 mph (136.79 km/h) | 77.54 mph (124.79 km/h) |
| 90 mph (144.84 km/h) | 82.1 mph (132.13 km/h) |
| 95 mph (152.89 km/h) | 86.66 mph (139.47 km/h) |
| 100 mph (160.93 km/h) | 91.23 mph (146.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1212 | 1407 | 1516 | 1583 | 1655 | 1706 | 1763 | 1830 | 1923 | 2016 | 2119 | 2201 | 2351 | 2516 | 2645 | 2727 | 2774 | 2944 | 3181 | 3697 |
Better Fuel Economy Factory Ratios Increased Power
