Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 325/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 32.8 (833) | 6.4 (162.5) 24.2% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 82.93 (2106.44) | 103.03 (2616.95) | 20.1 (510.51) 24.2% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 6.4 (162.5) | 3.2 (81.25) 100% |
| Revolutions per mile (km) | 764.01 (474.73) | 614.97 (382.12) | -149.04 (-92.61) -19.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.85 mph (39.99 km/h) |
| 25 mph (40.23 km/h) | 31.06 mph (49.98 km/h) |
| 30 mph (48.28 km/h) | 37.27 mph (59.98 km/h) |
| 35 mph (56.33 km/h) | 43.48 mph (69.98 km/h) |
| 40 mph (64.37 km/h) | 49.69 mph (79.98 km/h) |
| 45 mph (72.42 km/h) | 55.91 mph (89.97 km/h) |
| 50 mph (80.47 km/h) | 62.12 mph (99.97 km/h) |
| 55 mph (88.51 km/h) | 68.33 mph (109.97 km/h) |
| 60 mph (96.56 km/h) | 74.54 mph (119.96 km/h) |
| 65 mph (104.61 km/h) | 80.75 mph (129.96 km/h) |
| 70 mph (112.65 km/h) | 86.96 mph (139.96 km/h) |
| 75 mph (120.7 km/h) | 93.18 mph (149.95 km/h) |
| 80 mph (128.75 km/h) | 99.39 mph (159.95 km/h) |
| 85 mph (136.79 km/h) | 105.6 mph (169.95 km/h) |
| 90 mph (144.84 km/h) | 111.81 mph (179.94 km/h) |
| 95 mph (152.89 km/h) | 118.02 mph (189.94 km/h) |
| 100 mph (160.93 km/h) | 124.24 mph (199.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1565 | 1818 | 1958 | 2044 | 2138 | 2204 | 2278 | 2364 | 2484 | 2604 | 2737 | 2844 | 3037 | 3250 | 3416 | 3523 | 3583 | 3803 | 4109 | 4775 |
Better Fuel Economy Factory Ratios Increased Power
