S4 rear alignment (toe) setting

[sun and kath]

Hi Guys, can anyone tell me the correct rear toe setting for an S4?
I have found -2mm (toe in) on one internet location. and +8' on another site, (i think that means 8 mins of a degree which is roughly equalvalent to roughly .08mm toe out).

Any one know the correct setting? in mm if possible

cheers