because there is the track sale.... which are the most used tracks in MP after the free ones, espescially for these classes: GT3, DTM1992, DTM2015, IMSA GTO, Group 5 and Touring Classics? thanks for advice
I'll try to give it a Top 5-Ranking from my perspective: Nordschleife Nürburgring Red Bull Ring Spa Zandvoort Behind those it might be a bit more mixed. Other more often used tracks are: Zolder Mid Ohio Bathurst Monza Brands Hatch Suzuka (was more used in the past sadly) Hockenheim Oschersleben
Pretty much online is about 5 tracks:Nords/Red Bull Ring/Spa/Hockenheim/Nurburgring GP.Less common are:Zandvoort/Zolder/Monza/Suzuka/Oschersleben/Norisring and Brands.All other circuits are very rare.