Prof -
If you can take one or two more snaps of your setup...?
1) clearance of your sunroof with the long bike tray (I have 2 long trays also).
2) what is left on the M5 roof w/ the rack off? Do those little 'feet' stay ontop? It appears you screw the feet into the roof, then attach the rack to the feet? And the feet live there?
thanks.
michael.
2nd question first, see below URL, about 2/3 of the way down the page, user SaDrago has a writeup on the exact same Yakima setup on a Mazda3. He has great pics on what the Landing Pads looks like with the Control Towers removed.
http://**********************/index.php?topic=7432.msg2891177#msg2891177
Landing Pads are screwed into the fixpoints with a single 6mm bolt each. The 4 Control Towers (along with the bars and any attachments) can be detached from the Landing Pads in literally 2 minutes and the Landing Pads have plastic snap-on covers. You don't necessarily have to unscrew/remove the Landing Pads but your car will look funny if you leave it on without the rest of the rack on.
Now your 1st question, it's tough to measure but the clearance seems to be just under about 3/8" (see first pic). Also consider that I use an older style Steelhead, the type with an open ended tray on both sides. Because of this, the tray sits above/higher than the fork mount (see second pic). I believe the newer Yakima fork mount trays are integrated and are therefore "lower profile" and *could* hit the sunroof. Lastly, I laid a 1" x 4" piece of wood down the center of the rack and opened the sunroof and it definitely hits (see third pic) and lifts the front of the wood about 1/2".
Having said all of this, since you only have 2 trays, you can always attach them on either side of the open sunroof (inside of the towers). If you want to attach 3 or 4 bikes, you'll likely have to utilize more of the center portion directly above the sunroof (or even the space outside of the towers). If it were me, I'd opt for using the Boa attachments over the center (no tray necessary). We're literally talking about millimeters of clearance here and if you find that you need more height, you can also add spacers.
Now for an aside, I opted not to use a fairing because it'll rest on the sunroof but I think I may have figured out a way to use it and I don't think it'll look that bad. Essentially, I'll be adding a third crossbar without clips or towers and the third bar will be positioned about 6" in front of the front crossbar. I'll attempt this setup within the next week...