My local tyre shop with their laser equipment worked in degrees so 0.5° total toe in, half that each side. Factory quote in handbook 0 to 3.2mm (⅛") total. I don't feel the car would have enough hands off stability with zero though.
FWIW my car was found to have toe out ex factory!
BTW whilst your at it might be worth checking camber as well John. I have a magnetic thingy that attaches to discs if you want to borrow. Again I found one side with a little too much. Handbook 0.5° negative.
