Is the fluid level above the max marks on the side of the reservoir? Is the flexible seal under the cap in good shape? There shouldn't be fluid escaping from the reservoir even under high G turns.
@cct1: Yeah, I bled the brakes Sunday night after the second day, no air.
Kind of surprising since I've been boiling brake fluid for as long as I can remember. Over the course of the last 18 months I upgraded lines (Grassroots Garage SS) and fluid (Super Blue), then track pads (CT XP10/8), then calipers and rotors (TSW MDM), then ducts (Sneed's), then higher temp track pads (CT XP12F), then replaced the master cylinder, and finally this weekend they didn't boil. The rubber inside the cap didn't look torn, but maybe I just need to replace it anyways. I can't think of anything else to upgrade/replace. =/
@k-huevo: Pressure bleeder holds pressure, but it falls very slowly, like 1 psi per 5 minutes. It does the same thing on my BMW, though, so I didn't think it was a problem. That's a good way to check for a crack, though.
@cct1: Just OEM. The local parts guy gave me a small discount, but it still took a week to ship. The brake bias is built into the master cylinder, no reason to change it.
@N2MINI: Yeah, that's actually what Dan recommended. So you've seen other cars with this issue?
Chris- bluesmini (I think) Is an instructor and I saw it on his car as well.. He was instructing at the first Phil Wicks at VIR 1-1/2 years ago or so, and he comes to the BMW Center usually.. I got to ride a session with him at VIR.. His car is well "sorted" and quick..
