Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/25-20 | 255/20-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.41 (645.5) | 24.02 (610) | -1.4 (-35.5) -5.5% |
| Width inches (mm) | 10.83 (275) | 10.04 (255) | -0.79 (-20) -7.3% |
| Circum. inches (mm) | 79.84 (2027.9) | 75.45 (1916.37) | -4.39 (-111.53) -5.5% |
| Sidewall Height inches (mm) | 2.71 (68.75) | 2.01 (51) | -0.7 (-17.75) -25.8% |
| Revolutions per mile (km) | 793.6 (493.12) | 839.79 (521.82) | 46.19 (28.7) 5.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.9 mph (30.42 km/h) |
| 25 mph (40.23 km/h) | 23.63 mph (38.02 km/h) |
| 30 mph (48.28 km/h) | 28.35 mph (45.63 km/h) |
| 35 mph (56.33 km/h) | 33.08 mph (53.23 km/h) |
| 40 mph (64.37 km/h) | 37.8 mph (60.83 km/h) |
| 45 mph (72.42 km/h) | 42.53 mph (68.44 km/h) |
| 50 mph (80.47 km/h) | 47.25 mph (76.04 km/h) |
| 55 mph (88.51 km/h) | 51.98 mph (83.65 km/h) |
| 60 mph (96.56 km/h) | 56.7 mph (91.25 km/h) |
| 65 mph (104.61 km/h) | 61.43 mph (98.85 km/h) |
| 70 mph (112.65 km/h) | 66.15 mph (106.46 km/h) |
| 75 mph (120.7 km/h) | 70.88 mph (114.06 km/h) |
| 80 mph (128.75 km/h) | 75.6 mph (121.67 km/h) |
| 85 mph (136.79 km/h) | 80.33 mph (129.27 km/h) |
| 90 mph (144.84 km/h) | 85.05 mph (136.88 km/h) |
| 95 mph (152.89 km/h) | 89.78 mph (144.48 km/h) |
| 100 mph (160.93 km/h) | 94.5 mph (152.08 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2137 | 2483 | 2674 | 2792 | 2919 | 3010 | 3110 | 3228 | 3392 | 3556 | 3738 | 3883 | 4147 | 4438 | 4665 | 4811 | 4893 | 5193 | 5611 | 6520 |
Better Fuel Economy Factory Ratios Increased Power
