Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-21 | 345/50-24 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.4 (695.9) | 37.58 (954.6) | 10.19 (258.7) 37.2% |
| Width inches (mm) | 12.8 (325) | 13.58 (345) | 0.79 (20) 6.2% |
| Circum. inches (mm) | 86.07 (2186.23) | 118.07 (2998.96) | 32 (812.73) 37.2% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 6.79 (172.5) | 3.59 (91.25) 112.3% |
| Revolutions per mile (km) | 736.13 (457.41) | 536.63 (333.45) | -199.49 (-123.96) -27.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.43 mph (44.15 km/h) |
| 25 mph (40.23 km/h) | 34.29 mph (55.19 km/h) |
| 30 mph (48.28 km/h) | 41.15 mph (66.23 km/h) |
| 35 mph (56.33 km/h) | 48.01 mph (77.27 km/h) |
| 40 mph (64.37 km/h) | 54.87 mph (88.3 km/h) |
| 45 mph (72.42 km/h) | 61.73 mph (99.34 km/h) |
| 50 mph (80.47 km/h) | 68.59 mph (110.38 km/h) |
| 55 mph (88.51 km/h) | 75.45 mph (121.42 km/h) |
| 60 mph (96.56 km/h) | 82.3 mph (132.46 km/h) |
| 65 mph (104.61 km/h) | 89.16 mph (143.5 km/h) |
| 70 mph (112.65 km/h) | 96.02 mph (154.53 km/h) |
| 75 mph (120.7 km/h) | 102.88 mph (165.57 km/h) |
| 80 mph (128.75 km/h) | 109.74 mph (176.61 km/h) |
| 85 mph (136.79 km/h) | 116.6 mph (187.65 km/h) |
| 90 mph (144.84 km/h) | 123.46 mph (198.69 km/h) |
| 95 mph (152.89 km/h) | 130.32 mph (209.72 km/h) |
| 100 mph (160.93 km/h) | 137.17 mph (220.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1366 | 1586 | 1708 | 1784 | 1865 | 1924 | 1987 | 2063 | 2168 | 2272 | 2388 | 2481 | 2650 | 2836 | 2981 | 3074 | 3126 | 3318 | 3586 | 4167 |
Better Fuel Economy Factory Ratios Increased Power
