I've been using Hankook V12s on stock 189 wheels for DD/AX/track for a year. The tires have held up surprisingly well for me. Last weekend I was at the track in the intermediate run group and had no problem keeping up with the fastest guys.
Sure, you could spend a lot on upgraded tires, but as a beginner there's no need to. I'm still learning and getting faster on these tires every time out.
'07 E92 BMW 335i