Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 395/75-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 43.33 (1100.5) | -3.11 (-79) -6.7% |
| Width inches (mm) | 15.55 (395) | 15.55 (395) | 0 (0) 0% |
| Circum. inches (mm) | 145.89 (3705.51) | 136.12 (3457.32) | -9.77 (-248.19) -6.7% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 11.66 (296.25) | -1.56 (-39.5) -11.8% |
| Revolutions per mile (km) | 434.31 (269.87) | 465.49 (289.24) | 31.18 (19.37) 7.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.66 mph (30.03 km/h) |
| 25 mph (40.23 km/h) | 23.33 mph (37.54 km/h) |
| 30 mph (48.28 km/h) | 27.99 mph (45.05 km/h) |
| 35 mph (56.33 km/h) | 32.66 mph (52.55 km/h) |
| 40 mph (64.37 km/h) | 37.32 mph (60.06 km/h) |
| 45 mph (72.42 km/h) | 41.99 mph (67.57 km/h) |
| 50 mph (80.47 km/h) | 46.65 mph (75.08 km/h) |
| 55 mph (88.51 km/h) | 51.32 mph (82.59 km/h) |
| 60 mph (96.56 km/h) | 55.98 mph (90.09 km/h) |
| 65 mph (104.61 km/h) | 60.65 mph (97.6 km/h) |
| 70 mph (112.65 km/h) | 65.31 mph (105.11 km/h) |
| 75 mph (120.7 km/h) | 69.98 mph (112.62 km/h) |
| 80 mph (128.75 km/h) | 74.64 mph (120.12 km/h) |
| 85 mph (136.79 km/h) | 79.31 mph (127.63 km/h) |
| 90 mph (144.84 km/h) | 83.97 mph (135.14 km/h) |
| 95 mph (152.89 km/h) | 88.64 mph (142.65 km/h) |
| 100 mph (160.93 km/h) | 93.3 mph (150.16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1185 | 1376 | 1482 | 1548 | 1618 | 1668 | 1724 | 1789 | 1880 | 1971 | 2072 | 2152 | 2299 | 2460 | 2586 | 2667 | 2712 | 2878 | 3110 | 3614 |
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