Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/60-20 | 325/50-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.35 (898) | 32.8 (833) | -2.56 (-65) -7.2% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 111.07 (2821.15) | 103.03 (2616.95) | -8.04 (-204.2) -7.2% |
| Sidewall Height inches (mm) | 7.68 (195) | 6.4 (162.5) | -1.28 (-32.5) -16.7% |
| Revolutions per mile (km) | 570.46 (354.46) | 614.97 (382.12) | 44.51 (27.66) 7.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.55 mph (29.86 km/h) |
| 25 mph (40.23 km/h) | 23.19 mph (37.32 km/h) |
| 30 mph (48.28 km/h) | 27.83 mph (44.79 km/h) |
| 35 mph (56.33 km/h) | 32.47 mph (52.25 km/h) |
| 40 mph (64.37 km/h) | 37.1 mph (59.71 km/h) |
| 45 mph (72.42 km/h) | 41.74 mph (67.18 km/h) |
| 50 mph (80.47 km/h) | 46.38 mph (74.64 km/h) |
| 55 mph (88.51 km/h) | 51.02 mph (82.11 km/h) |
| 60 mph (96.56 km/h) | 55.66 mph (89.57 km/h) |
| 65 mph (104.61 km/h) | 60.3 mph (97.04 km/h) |
| 70 mph (112.65 km/h) | 64.93 mph (104.5 km/h) |
| 75 mph (120.7 km/h) | 69.57 mph (111.96 km/h) |
| 80 mph (128.75 km/h) | 74.21 mph (119.43 km/h) |
| 85 mph (136.79 km/h) | 78.85 mph (126.89 km/h) |
| 90 mph (144.84 km/h) | 83.49 mph (134.36 km/h) |
| 95 mph (152.89 km/h) | 88.12 mph (141.82 km/h) |
| 100 mph (160.93 km/h) | 92.76 mph (149.29 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
