Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/25-20 | 255/25-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.61 (650.5) | 25.02 (635.5) | -0.59 (-15) -2.3% |
| Width inches (mm) | 11.22 (285) | 10.04 (255) | -1.18 (-30) -10.5% |
| Circum. inches (mm) | 80.46 (2043.61) | 78.6 (1996.48) | -1.86 (-47.12) -2.3% |
| Sidewall Height inches (mm) | 2.81 (71.25) | 2.51 (63.75) | -0.3 (-7.5) -10.5% |
| Revolutions per mile (km) | 787.5 (489.33) | 806.09 (500.88) | 18.59 (11.55) 2.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.54 mph (31.44 km/h) |
| 25 mph (40.23 km/h) | 24.42 mph (39.31 km/h) |
| 30 mph (48.28 km/h) | 29.31 mph (47.17 km/h) |
| 35 mph (56.33 km/h) | 34.19 mph (55.03 km/h) |
| 40 mph (64.37 km/h) | 39.08 mph (62.89 km/h) |
| 45 mph (72.42 km/h) | 43.96 mph (70.75 km/h) |
| 50 mph (80.47 km/h) | 48.85 mph (78.61 km/h) |
| 55 mph (88.51 km/h) | 53.73 mph (86.47 km/h) |
| 60 mph (96.56 km/h) | 58.62 mph (94.33 km/h) |
| 65 mph (104.61 km/h) | 63.5 mph (102.2 km/h) |
| 70 mph (112.65 km/h) | 68.39 mph (110.06 km/h) |
| 75 mph (120.7 km/h) | 73.27 mph (117.92 km/h) |
| 80 mph (128.75 km/h) | 78.16 mph (125.78 km/h) |
| 85 mph (136.79 km/h) | 83.04 mph (133.64 km/h) |
| 90 mph (144.84 km/h) | 87.92 mph (141.5 km/h) |
| 95 mph (152.89 km/h) | 92.81 mph (149.36 km/h) |
| 100 mph (160.93 km/h) | 97.69 mph (157.22 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2051 | 2383 | 2566 | 2680 | 2802 | 2889 | 2985 | 3099 | 3256 | 3413 | 3588 | 3727 | 3980 | 4260 | 4478 | 4618 | 4696 | 4984 | 5386 | 6259 |
Better Fuel Economy Factory Ratios Increased Power
