TMP (Cayuga) is a great place to do laps. Many groups and schools use it for teaching and open lapping events. Very flat, no obstacles and great sightlines so it's very safe.
In your 318 you'd have a blast- it's very tight and technical for the most part, so big power cars don't really have room to "stretch their legs" like they would at Mosport.
The BMW Club of Canada will hold their first school there on April 4/2003.
SIFO (slow in fast out)