Sebring International Raceway (map)
This will be a 2-day Porsche BMW Owner's Club (PBOC) track event at Sebring Raceway - Saturday & Sunday
Register at PBOC website: www.pbocflorida.com
Drivers: $275 (one day), or $395 (weekend) with instructor.
Guests: FREE
*Note: This event is open to ALL cars, not just BMW and Porsche 

Will be there for Saturday also. I have 1000's of miles on Sebring. Love that track!! Has a little for everyone.. But it is a little bumpy. I get to 120 MPH on the back straight with my E30 M3. Stock motor..
Theo, Sebring is an amazing track! It is very technical but you will have a blast. Your M3 should see speeds just north of 140 mph on the back straight. It is a very bumpy course, but that's part of its charm :)