one new tyre - do I need to get alignment done?
I was about to head for a long (1000km) trip in the 159, so I was checking the tyre pressures. I noticed a pretty big flap on the front left tyre hanging off (on the sidewall) so unfortunately had to fork out for a new one (and I managed to get one of the last remaining pirelli p-zero neros in 245r18 size!). It appears as though a wayward rock at some point sliced up the sidewall.
So a couple of questions:
1. All 4 tyres were replaced about 10,000 kms ago and have only light wear on them. The guys that fitted the new tyre said its best to ensure at least the 2 fronts have pretty even wear, but seeing as the existing wear was quite light they thought I could get away with only fitting 1 tyre, not 2. Any comments/thoughts here?
2. When the tyres were replaced last time, I got a full 4-wheel alignment done and got the fronts set to zero toe. After having one new tyre fitted, do I need to get the alignment done again? What about balancing?
Basically I just want to prevent rapid wear, as I went through one set of fronts very quickly (bald down to the belts on inside edge within 20,000km) before I found out the factory spec alignment geometry wasn't correct.
Any thoughts appreciated! As an aside, does anybody know of any good independent alfa specialists in Melbourne, Australia?