Re: 156 tyre wear
it is not normal to be scrubbing the outside edge of your tyres.
All of mine tend to wear evenly, but more so on the outside on the front, the rears wears accross the tyre, but more to the inside, so I swap them every 3-6 months fron to rear.
If you put an alfa on a rolling road, you will see the front wheels pull back under acceleration, this is what causes an even spread of wear, but more biased towards the outside.
Even with all new suspension, bushes droplinks etc, there are too many bushes in there!