Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 395/85-20 | 275/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 46.44 (1179.5) | 31.91 (810.5) | -14.53 (-369) -31.3% |
| Width inches (mm) | 15.55 (395) | 10.83 (275) | -4.72 (-120) -30.4% |
| Circum. inches (mm) | 145.89 (3705.51) | 100.25 (2546.26) | -45.64 (-1159.25) -31.3% |
| Sidewall Height inches (mm) | 13.22 (335.75) | 5.95 (151.25) | -7.26 (-184.5) -55% |
| Revolutions per mile (km) | 434.31 (269.87) | 632.04 (392.73) | 197.73 (122.86) 45.5% |
275/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 13.74 mph (22.12 km/h) |
| 25 mph (40.23 km/h) | 17.18 mph (27.65 km/h) |
| 30 mph (48.28 km/h) | 20.61 mph (33.18 km/h) |
| 35 mph (56.33 km/h) | 24.05 mph (38.71 km/h) |
| 40 mph (64.37 km/h) | 27.49 mph (44.23 km/h) |
| 45 mph (72.42 km/h) | 30.92 mph (49.76 km/h) |
| 50 mph (80.47 km/h) | 34.36 mph (55.29 km/h) |
| 55 mph (88.51 km/h) | 37.79 mph (60.82 km/h) |
| 60 mph (96.56 km/h) | 41.23 mph (66.35 km/h) |
| 65 mph (104.61 km/h) | 44.67 mph (71.88 km/h) |
| 70 mph (112.65 km/h) | 48.1 mph (77.41 km/h) |
| 75 mph (120.7 km/h) | 51.54 mph (82.94 km/h) |
| 80 mph (128.75 km/h) | 54.97 mph (88.47 km/h) |
| 85 mph (136.79 km/h) | 58.41 mph (94 km/h) |
| 90 mph (144.84 km/h) | 61.84 mph (99.53 km/h) |
| 95 mph (152.89 km/h) | 65.28 mph (105.06 km/h) |
| 100 mph (160.93 km/h) | 68.72 mph (110.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1608 | 1869 | 2012 | 2101 | 2197 | 2265 | 2341 | 2430 | 2553 | 2676 | 2813 | 2923 | 3121 | 3340 | 3511 | 3621 | 3682 | 3908 | 4223 | 4907 |
Better Fuel Economy Factory Ratios Increased Power
