I've just checked the fronts on my MK5 GTI and there's at least 4mm at the edges but they're nearly down to the wear indicator in the centre, car has done 13500 from new.
This seems to suggest the tyres (Michelin HP Primacy) are overinflated but I regularly check the pressures and make sure they are at the recommended 36psi, does everyone use the VW recommended pressures?
thanks
Simon