Def 195/50s. This is the size VAG provided with all 15" rims, apparently, and is the size which keeps all speedo / odo settings the same. Also happens that they are nice and cheap! Had a set on my Sebrings in the sig pic.
Went for Eagles first time round (great tyres) just ordered a set of Proxes TRs for my new G60 Steelies (also 15").