Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 285/25-20 | 33/10.5-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.61 (650.5) | 32.93 (836.34) | 7.32 (185.84) 28.6% |
| Width inches (mm) | 11.22 (285) | 10.51 (267) | -0.71 (-18) -6.3% |
| Circum. inches (mm) | 80.46 (2043.61) | 103.44 (2627.44) | 22.99 (583.83) 28.6% |
| Sidewall Height inches (mm) | 2.81 (71.25) | 7.46 (189.57) | 4.66 (118.32) 166.1% |
| Revolutions per mile (km) | 787.5 (489.33) | 612.51 (380.6) | -174.99 (-108.73) -22.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.71 mph (41.38 km/h) |
| 25 mph (40.23 km/h) | 32.14 mph (51.73 km/h) |
| 30 mph (48.28 km/h) | 38.57 mph (62.07 km/h) |
| 35 mph (56.33 km/h) | 45 mph (72.42 km/h) |
| 40 mph (64.37 km/h) | 51.43 mph (82.76 km/h) |
| 45 mph (72.42 km/h) | 57.86 mph (93.11 km/h) |
| 50 mph (80.47 km/h) | 64.28 mph (103.46 km/h) |
| 55 mph (88.51 km/h) | 70.71 mph (113.8 km/h) |
| 60 mph (96.56 km/h) | 77.14 mph (124.15 km/h) |
| 65 mph (104.61 km/h) | 83.57 mph (134.49 km/h) |
| 70 mph (112.65 km/h) | 90 mph (144.84 km/h) |
| 75 mph (120.7 km/h) | 96.43 mph (155.18 km/h) |
| 80 mph (128.75 km/h) | 102.86 mph (165.53 km/h) |
| 85 mph (136.79 km/h) | 109.28 mph (175.88 km/h) |
| 90 mph (144.84 km/h) | 115.71 mph (186.22 km/h) |
| 95 mph (152.89 km/h) | 122.14 mph (196.57 km/h) |
| 100 mph (160.93 km/h) | 128.57 mph (206.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1559 | 1811 | 1950 | 2036 | 2129 | 2195 | 2268 | 2355 | 2474 | 2593 | 2726 | 2832 | 3025 | 3237 | 3403 | 3509 | 3569 | 3787 | 4092 | 4756 |
Better Fuel Economy Factory Ratios Increased Power
