Is this common on a performance
> tire? or should I be looking ar a 4 wheel alignment with the new
> tires?
> thanks tom

I'd add that it is pretty common to cars in general, especially those
without camber adjustments. A little edge wear won't hurt, and even
if moderate toe-out is the cause, it will just make the car a little
less responsive to steering input and cost a bit of extra gas.

Just sounds to me like it is time for new tires. Put the alignment
money into some good ones.

JM