My dad's GTD has Dunlops - hoping they run out when my car is built!
MK5 GT Sport TDI170 came with bridgestone Potenzas, lasted until 21k miles on fronts.
1st Scirocco 140TDI GT came with Dunlop Sport Maxx - shagged 3 tyres first winter due to very minor pothole bumps causing sidewall bulges, hence my dislike of them! Changed to Continentals.
2nd Scirocco 170TDI GT came with Pirelli P7 self sealing. Lasted to 14k miles only on fronts, due to excessive tyre wear on the centre and still 7mm left on the outer 1/4 on each side of the tyre (as if massively overinflated, but were actually inflated to VW recommendations on filler flap). Rears were still as new, got Michelin Pilot Sport 3s for the fronts as replacements.