M3 F80 chasing 2 Porsche GT3 Nordschleife Touristenfahrten, BTG with traffic

Lap time BTG with some traffic. Touristenfahrten on right from the start i had a white Gt3 in front of me and an orange one behind me, i was taken in a Gt3sandwich:) I tried to keep up with these guys, please notice, i drive my M3 100 stock, so no semislicks like the Gt3s. At this Point i have to CRITICISE myself for partly uncareful or, and irresponsible driving. I was driving too close behind the Gt3s in 2 situations, one at Brünnchen 1. The Porsche had to brake very hard, i