Mr S.. your your barking up the right tree now! not so much damage to the tyre, but to the alloy wheel itself! although there are tyre issues.
Stiffer suspension, maybe a little "Toe out", and a couple of degrees of neg camber will turn a standard car into something like kart handling, on something like a Golf! why would anyone want to spend serious "doe", only to kill the gain, with over stretched tires, and the more grip you have the worse the problem can get
Going back to my original post, I stated in the "third" that the angle at which the tyre bead sits up to the lip of the wheel is crucial, too much angle, will cause direct pressure, pushing outwards on the edge of the rim (the weakest part) possibly leading to failure!
by the way, the piccie of the silver Golf, although it has stretched tires, they are nothing to what I've seen in the past
Tom