This has been discussed before.  Below is a post by me on the subject.

Nick /////

Post follows

Yes, however in all cases I have known it has been on the inside edges.

The factory and book quotes a toe figure of -1 +/-1mm, i.e. toe out 1mm
Many were shipped with -2mm.
A known problem.
I had mine stripped in 12K miles.
Had to have them replaced whilst abroad which was most inconvenient in the
Italian Dolomites  because of location and few and far between tye shops.
Also cost me 300 Euros and disruption of at least one day of my holiday.
Having done all my own car tracking in the past I instructed the tyre shop
to set the Toe to 0mm and ignore Fiats figure.

When I got back to England I put a claim in through my Fiat dealer.  Then I
found out it was a known problem.  They put a claim in to Fiat for me and I
got my 300 Euros back after about 8 weeks.

If your outside edges are worn then you have excessive Toe IN, the opposite
of what I would expect if you have the known problem.

Suggest you get the tyres replaced and the car "four wheel" tracked to check
everything out.  Only the front toe is adjustable but a full track will
measure the total geometry thus ensuring that you don't have any other
problem.   Remember to get the track set to 0mm.

You might like to ask your dealer to confirm that zero is the current
prefered value.  It works for me.

You are unlikely to get a refund from Fiat unless your car is less that one
or two years old.  The normal would be a 50% refund for 12K miles and 12
months.  At 22K miles you are only 2K miles short of the 24K miles that most
modern performance front wheel drive cars seem to make their front tyres
survive.

Nick /////