Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/45-20 | 275/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.74 (755.5) | 30.83 (783) | 1.08 (27.5) 3.6% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 93.44 (2373.47) | 96.85 (2459.87) | 3.4 (86.39) 3.6% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 5.41 (137.5) | 0.54 (13.75) 11.1% |
| Revolutions per mile (km) | 678.05 (421.32) | 654.24 (406.53) | -23.81 (-14.8) -3.5% |
275/50-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.73 mph (33.36 km/h) |
| 25 mph (40.23 km/h) | 25.91 mph (41.7 km/h) |
| 30 mph (48.28 km/h) | 31.09 mph (50.04 km/h) |
| 35 mph (56.33 km/h) | 36.27 mph (58.38 km/h) |
| 40 mph (64.37 km/h) | 41.46 mph (66.72 km/h) |
| 45 mph (72.42 km/h) | 46.64 mph (75.06 km/h) |
| 50 mph (80.47 km/h) | 51.82 mph (83.4 km/h) |
| 55 mph (88.51 km/h) | 57 mph (91.74 km/h) |
| 60 mph (96.56 km/h) | 62.18 mph (100.08 km/h) |
| 65 mph (104.61 km/h) | 67.37 mph (108.42 km/h) |
| 70 mph (112.65 km/h) | 72.55 mph (116.75 km/h) |
| 75 mph (120.7 km/h) | 77.73 mph (125.09 km/h) |
| 80 mph (128.75 km/h) | 82.91 mph (133.43 km/h) |
| 85 mph (136.79 km/h) | 88.09 mph (141.77 km/h) |
| 90 mph (144.84 km/h) | 93.28 mph (150.11 km/h) |
| 95 mph (152.89 km/h) | 98.46 mph (158.45 km/h) |
| 100 mph (160.93 km/h) | 103.64 mph (166.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1665 | 1934 | 2083 | 2175 | 2274 | 2345 | 2423 | 2515 | 2643 | 2770 | 2912 | 3025 | 3231 | 3457 | 3634 | 3748 | 3812 | 4045 | 4371 | 5080 |
Better Fuel Economy Factory Ratios Increased Power
