Answer:
It allows the wheels to move of the neutral position without the tires scrubbing
Step-by-step explanation:
The double wishbone suspension is independent and it can be used in both the front wheels and it affords very good control of the outward or inward tilting of the front wheel and it keeps the wheels perpendicular to the road surface
However, when equal length parallel wishbone are installed, it gives rise to scrubbing of the tires as the wheels turn in the tracks
The development of unequal length non-parallel transverse or converging wishbones with A-arms suspension resolved the tire scrubbing effect on the wheels when moving out of the neutral position.