Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/40-20 | 275/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.66 (728) | 31.91 (810.5) | 3.25 (82.5) 11.3% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 90.04 (2287.08) | 100.25 (2546.26) | 10.2 (259.18) 11.3% |
| Sidewall Height inches (mm) | 4.33 (110) | 5.95 (151.25) | 1.62 (41.25) 37.5% |
| Revolutions per mile (km) | 703.67 (437.24) | 632.04 (392.73) | -71.63 (-44.51) -10.2% |
275/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.27 mph (35.83 km/h) |
| 25 mph (40.23 km/h) | 27.83 mph (44.79 km/h) |
| 30 mph (48.28 km/h) | 33.4 mph (53.75 km/h) |
| 35 mph (56.33 km/h) | 38.97 mph (62.71 km/h) |
| 40 mph (64.37 km/h) | 44.53 mph (71.67 km/h) |
| 45 mph (72.42 km/h) | 50.1 mph (80.63 km/h) |
| 50 mph (80.47 km/h) | 55.67 mph (89.59 km/h) |
| 55 mph (88.51 km/h) | 61.23 mph (98.54 km/h) |
| 60 mph (96.56 km/h) | 66.8 mph (107.5 km/h) |
| 65 mph (104.61 km/h) | 72.37 mph (116.46 km/h) |
| 70 mph (112.65 km/h) | 77.93 mph (125.42 km/h) |
| 75 mph (120.7 km/h) | 83.5 mph (134.38 km/h) |
| 80 mph (128.75 km/h) | 89.07 mph (143.34 km/h) |
| 85 mph (136.79 km/h) | 94.63 mph (152.3 km/h) |
| 90 mph (144.84 km/h) | 100.2 mph (161.26 km/h) |
| 95 mph (152.89 km/h) | 105.77 mph (170.21 km/h) |
| 100 mph (160.93 km/h) | 111.33 mph (179.17 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
