Just kidding. New tires later today.
I got the car with the stock Michelin's on it at 55k miles. The previous owner took them off and ran aftermarket wheels/tires. I'm still using the front Mich.
I got about 5k out of the orig rear Mich, then put on some 275/30 19 Conti's I had on my 328xi with about 5k left, (in pic), now installing a set of new 285/30 19 v12's today. Can't ignore the price. I will replace the front eventually with a little bit larger tire, probably 255/30, maybe 265. Keeping it under 26" diameter.
I can't really compare the traction Mich vs. Conti, since both sets were worn from the beginning. I can say the car can spin both fairly easily.
I'll post a pic or two after the new tires are on.