High and Low frame front suspension difference

[Mike Costigan]

... Don't know why it is there.

I don't know whether this is just an 'old wives' tale', but I have always understood that camber of the front wheels was to keep the tyre tread squarely on the road. That sounds daft today with our flat road surfaces, but when our cars were new even the main roads were quite narrow with pronounced camber of the surface to promote drainage, and with low traffic density it was normal to drive on the crown in the centre of the road; thus the wheels needed to be at an angle to maintain overall contact.