Originally Posted by swiss_cornholio
You don't need special tires. However, be prepared to replace them after the weekend.
Make sure you have at least 30% break pad thickness left before driving on a track. If you have the original BMW pads, don't do more than 2 consecutive laps. If you plan on tracking often, get the brakes replaced by something that was actually designed for track use, e.g. StopTech ST-40.
I did some really hard laps with my complete stock M3 and yes. After 2-3 laps stock tires get too hot and the brakes won't give you that feeling which you're looking for.
Just take a 30min break and it's all good again.
Running the stock brake system with Pagid RS19 pads now and it's really absolutely enough.
The Nordschleife isn't that hard on the breaks than a normal flat racetrack is.