I find your reason quite shakey there Ian, i would assume the foam to have as much give as a mini-pin would ,as to make an impact onto a tyre big enough to induce excessive force to wear pins attached to wishbones and drive trains via diffs etc would be so much that a mini pin would rim out , thus creating a harder impact than the foam clad.These forces are soaked up via your shocks etc your axles and drives dont move any further that cause wear this way.
You can only argue wear rates down to traction and braking , and as mini-pins clearly have more of this when newish , they should obviously wear your gear down faster than foams.
As mini-pins balloon out under excessive throttle and wheel slip the contact area becomes less , thus compounding lack of grip even more.
You just dont get that with foams ,just a constantish level grip.It may not be the quickest but i find its easily the most user and driver friendly tyre.
Maybe we should make it the only tyre we use and there will maybe less excuses and blaming it on using bald pins etc.
And maybe the track will stop fluffing up so much ,thats all your carpet pile wearing down.
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