Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/25-20 | 215/25-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.61 (650.5) | 24.23 (615.5) | -1.38 (-35) -5.4% |
| Width inches (mm) | 11.22 (285) | 8.46 (215) | -2.76 (-70) -24.6% |
| Circum. inches (mm) | 80.46 (2043.61) | 76.13 (1933.65) | -4.33 (-109.96) -5.4% |
| Sidewall Height inches (mm) | 2.81 (71.25) | 2.12 (53.75) | -0.69 (-17.5) -24.6% |
| Revolutions per mile (km) | 787.5 (489.33) | 832.28 (517.16) | 44.78 (27.83) 5.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.92 mph (30.46 km/h) |
| 25 mph (40.23 km/h) | 23.65 mph (38.07 km/h) |
| 30 mph (48.28 km/h) | 28.39 mph (45.68 km/h) |
| 35 mph (56.33 km/h) | 33.12 mph (53.3 km/h) |
| 40 mph (64.37 km/h) | 37.85 mph (60.91 km/h) |
| 45 mph (72.42 km/h) | 42.58 mph (68.52 km/h) |
| 50 mph (80.47 km/h) | 47.31 mph (76.14 km/h) |
| 55 mph (88.51 km/h) | 52.04 mph (83.75 km/h) |
| 60 mph (96.56 km/h) | 56.77 mph (91.37 km/h) |
| 65 mph (104.61 km/h) | 61.5 mph (98.98 km/h) |
| 70 mph (112.65 km/h) | 66.23 mph (106.59 km/h) |
| 75 mph (120.7 km/h) | 70.96 mph (114.21 km/h) |
| 80 mph (128.75 km/h) | 75.7 mph (121.82 km/h) |
| 85 mph (136.79 km/h) | 80.43 mph (129.43 km/h) |
| 90 mph (144.84 km/h) | 85.16 mph (137.05 km/h) |
| 95 mph (152.89 km/h) | 89.89 mph (144.66 km/h) |
| 100 mph (160.93 km/h) | 94.62 mph (152.28 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2118 | 2460 | 2650 | 2767 | 2893 | 2983 | 3082 | 3200 | 3362 | 3524 | 3704 | 3848 | 4110 | 4398 | 4624 | 4768 | 4849 | 5146 | 5561 | 6462 |
Better Fuel Economy Factory Ratios Increased Power
