Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-20 | 395/20-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26 (660.5) | 26.22 (666) | 0.22 (5.5) 0.8% |
| Width inches (mm) | 12.01 (305) | 15.55 (395) | 3.54 (90) 29.5% |
| Circum. inches (mm) | 81.69 (2075.02) | 82.37 (2092.3) | 0.68 (17.28) 0.8% |
| Sidewall Height inches (mm) | 3 (76.25) | 3.11 (79) | 0.11 (2.75) 3.6% |
| Revolutions per mile (km) | 775.58 (481.92) | 769.17 (477.94) | -6.4 (-3.98) -0.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.17 mph (32.45 km/h) |
| 25 mph (40.23 km/h) | 25.21 mph (40.57 km/h) |
| 30 mph (48.28 km/h) | 30.25 mph (48.68 km/h) |
| 35 mph (56.33 km/h) | 35.29 mph (56.8 km/h) |
| 40 mph (64.37 km/h) | 40.33 mph (64.91 km/h) |
| 45 mph (72.42 km/h) | 45.37 mph (73.02 km/h) |
| 50 mph (80.47 km/h) | 50.42 mph (81.14 km/h) |
| 55 mph (88.51 km/h) | 55.46 mph (89.25 km/h) |
| 60 mph (96.56 km/h) | 60.5 mph (97.36 km/h) |
| 65 mph (104.61 km/h) | 65.54 mph (105.48 km/h) |
| 70 mph (112.65 km/h) | 70.58 mph (113.59 km/h) |
| 75 mph (120.7 km/h) | 75.62 mph (121.71 km/h) |
| 80 mph (128.75 km/h) | 80.67 mph (129.82 km/h) |
| 85 mph (136.79 km/h) | 85.71 mph (137.93 km/h) |
| 90 mph (144.84 km/h) | 90.75 mph (146.05 km/h) |
| 95 mph (152.89 km/h) | 95.79 mph (154.16 km/h) |
| 100 mph (160.93 km/h) | 100.83 mph (162.27 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1957 | 2274 | 2449 | 2557 | 2674 | 2757 | 2849 | 2957 | 3107 | 3257 | 3423 | 3557 | 3798 | 4065 | 4273 | 4406 | 4481 | 4756 | 5139 | 5972 |
Better Fuel Economy Factory Ratios Increased Power
