Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/50-20 | 245/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.65 (753) | 30.61 (777.5) | 0.96 (24.5) 3.3% |
| Width inches (mm) | 9.65 (245) | 9.65 (245) | 0 (0) 0% |
| Circum. inches (mm) | 93.13 (2365.62) | 96.16 (2442.59) | 3.03 (76.97) 3.3% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 5.31 (134.75) | 0.48 (12.25) 10% |
| Revolutions per mile (km) | 680.31 (422.72) | 658.87 (409.4) | -21.44 (-13.32) -3.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.65 mph (33.23 km/h) |
| 25 mph (40.23 km/h) | 25.81 mph (41.54 km/h) |
| 30 mph (48.28 km/h) | 30.98 mph (49.85 km/h) |
| 35 mph (56.33 km/h) | 36.14 mph (58.16 km/h) |
| 40 mph (64.37 km/h) | 41.3 mph (66.47 km/h) |
| 45 mph (72.42 km/h) | 46.46 mph (74.78 km/h) |
| 50 mph (80.47 km/h) | 51.63 mph (83.09 km/h) |
| 55 mph (88.51 km/h) | 56.79 mph (91.39 km/h) |
| 60 mph (96.56 km/h) | 61.95 mph (99.7 km/h) |
| 65 mph (104.61 km/h) | 67.11 mph (108.01 km/h) |
| 70 mph (112.65 km/h) | 72.28 mph (116.32 km/h) |
| 75 mph (120.7 km/h) | 77.44 mph (124.63 km/h) |
| 80 mph (128.75 km/h) | 82.6 mph (132.94 km/h) |
| 85 mph (136.79 km/h) | 87.77 mph (141.25 km/h) |
| 90 mph (144.84 km/h) | 92.93 mph (149.55 km/h) |
| 95 mph (152.89 km/h) | 98.09 mph (157.86 km/h) |
| 100 mph (160.93 km/h) | 103.25 mph (166.17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1677 | 1948 | 2098 | 2190 | 2290 | 2362 | 2440 | 2533 | 2661 | 2790 | 2932 | 3047 | 3253 | 3482 | 3660 | 3774 | 3839 | 4074 | 4402 | 5116 |
Better Fuel Economy Factory Ratios Increased Power
