Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/30-20 | 225/25-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.31 (643) | 24.43 (620.5) | -0.89 (-22.5) -3.5% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 79.53 (2020.04) | 76.75 (1949.36) | -2.78 (-70.69) -3.5% |
| Sidewall Height inches (mm) | 2.66 (67.5) | 2.21 (56.25) | -0.44 (-11.25) -16.7% |
| Revolutions per mile (km) | 796.69 (495.04) | 825.58 (512.99) | 28.89 (17.95) 3.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.3 mph (31.06 km/h) |
| 25 mph (40.23 km/h) | 24.13 mph (38.83 km/h) |
| 30 mph (48.28 km/h) | 28.95 mph (46.59 km/h) |
| 35 mph (56.33 km/h) | 33.78 mph (54.36 km/h) |
| 40 mph (64.37 km/h) | 38.6 mph (62.12 km/h) |
| 45 mph (72.42 km/h) | 43.43 mph (69.89 km/h) |
| 50 mph (80.47 km/h) | 48.25 mph (77.65 km/h) |
| 55 mph (88.51 km/h) | 53.08 mph (85.42 km/h) |
| 60 mph (96.56 km/h) | 57.9 mph (93.18 km/h) |
| 65 mph (104.61 km/h) | 62.73 mph (100.95 km/h) |
| 70 mph (112.65 km/h) | 67.55 mph (108.71 km/h) |
| 75 mph (120.7 km/h) | 72.38 mph (116.48 km/h) |
| 80 mph (128.75 km/h) | 77.2 mph (124.24 km/h) |
| 85 mph (136.79 km/h) | 82.03 mph (132.01 km/h) |
| 90 mph (144.84 km/h) | 86.85 mph (139.77 km/h) |
| 95 mph (152.89 km/h) | 91.68 mph (147.54 km/h) |
| 100 mph (160.93 km/h) | 96.5 mph (155.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2101 | 2441 | 2628 | 2745 | 2870 | 2959 | 3058 | 3174 | 3335 | 3496 | 3674 | 3817 | 4077 | 4363 | 4586 | 4729 | 4810 | 5105 | 5516 | 6410 |
Better Fuel Economy Factory Ratios Increased Power
