Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/25-20 | 275/50-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.41 (645.5) | 28.83 (732.2) | 3.41 (86.7) 13.4% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 79.84 (2027.9) | 90.56 (2300.27) | 10.72 (272.38) 13.4% |
| Sidewall Height inches (mm) | 2.71 (68.75) | 5.41 (137.5) | 2.71 (68.75) 100% |
| Revolutions per mile (km) | 793.6 (493.12) | 699.63 (434.73) | -93.97 (-58.39) -11.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.69 mph (36.51 km/h) |
| 25 mph (40.23 km/h) | 28.36 mph (45.64 km/h) |
| 30 mph (48.28 km/h) | 34.03 mph (54.77 km/h) |
| 35 mph (56.33 km/h) | 39.7 mph (63.89 km/h) |
| 40 mph (64.37 km/h) | 45.37 mph (73.02 km/h) |
| 45 mph (72.42 km/h) | 51.04 mph (82.15 km/h) |
| 50 mph (80.47 km/h) | 56.72 mph (91.28 km/h) |
| 55 mph (88.51 km/h) | 62.39 mph (100.4 km/h) |
| 60 mph (96.56 km/h) | 68.06 mph (109.53 km/h) |
| 65 mph (104.61 km/h) | 73.73 mph (118.66 km/h) |
| 70 mph (112.65 km/h) | 79.4 mph (127.79 km/h) |
| 75 mph (120.7 km/h) | 85.07 mph (136.91 km/h) |
| 80 mph (128.75 km/h) | 90.75 mph (146.04 km/h) |
| 85 mph (136.79 km/h) | 96.42 mph (155.17 km/h) |
| 90 mph (144.84 km/h) | 102.09 mph (164.3 km/h) |
| 95 mph (152.89 km/h) | 107.76 mph (173.42 km/h) |
| 100 mph (160.93 km/h) | 113.43 mph (182.55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1780 | 2068 | 2227 | 2326 | 2432 | 2508 | 2591 | 2690 | 2826 | 2962 | 3114 | 3235 | 3455 | 3697 | 3887 | 4008 | 4076 | 4326 | 4675 | 5432 |
Better Fuel Economy Factory Ratios Increased Power
