Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-21 | 305/55-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.4 (695.9) | 39.21 (995.9) | 11.81 (300) 43.1% |
| Width inches (mm) | 12.8 (325) | 12.01 (305) | -0.79 (-20) -6.2% |
| Circum. inches (mm) | 86.07 (2186.23) | 123.18 (3128.71) | 37.11 (942.48) 43.1% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 6.6 (167.75) | 3.41 (86.5) 106.5% |
| Revolutions per mile (km) | 736.13 (457.41) | 514.38 (319.62) | -221.75 (-137.79) -30.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.62 mph (46.06 km/h) |
| 25 mph (40.23 km/h) | 35.78 mph (57.58 km/h) |
| 30 mph (48.28 km/h) | 42.93 mph (69.09 km/h) |
| 35 mph (56.33 km/h) | 50.09 mph (80.61 km/h) |
| 40 mph (64.37 km/h) | 57.24 mph (92.13 km/h) |
| 45 mph (72.42 km/h) | 64.4 mph (103.64 km/h) |
| 50 mph (80.47 km/h) | 71.55 mph (115.16 km/h) |
| 55 mph (88.51 km/h) | 78.71 mph (126.67 km/h) |
| 60 mph (96.56 km/h) | 85.87 mph (138.19 km/h) |
| 65 mph (104.61 km/h) | 93.02 mph (149.7 km/h) |
| 70 mph (112.65 km/h) | 100.18 mph (161.22 km/h) |
| 75 mph (120.7 km/h) | 107.33 mph (172.73 km/h) |
| 80 mph (128.75 km/h) | 114.49 mph (184.25 km/h) |
| 85 mph (136.79 km/h) | 121.64 mph (195.77 km/h) |
| 90 mph (144.84 km/h) | 128.8 mph (207.28 km/h) |
| 95 mph (152.89 km/h) | 135.95 mph (218.8 km/h) |
| 100 mph (160.93 km/h) | 143.11 mph (230.31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1309 | 1521 | 1638 | 1710 | 1788 | 1844 | 1905 | 1977 | 2078 | 2178 | 2289 | 2378 | 2540 | 2718 | 2858 | 2947 | 2997 | 3181 | 3437 | 3994 |
Better Fuel Economy Factory Ratios Increased Power
