Need help with front end -Alignment

Radial tires certainly do need different alignment specs because of their tendancy to allow the tread to contact the road over a wider spectrum of angles compared to biased ply tires. In other words, it takes MORE of a given angle to make a difference with a radial tire. Whereas biased ply tires will be in one position at say -.5* of camber, a radial tire will need more negative camber for the contact patch to be in the same position. I thought that was pretty common knowledge industry wide. Same thing that makes this true is also the same reason radial tires hold the contact patch on the road better than biased ply tires. The contact patch is allowed to "squirm", thereby actually allowing it to remain on the road through a wider arc of camber angle.