Yes you are correct. By rotate, I meant the cap moving independent of the wheel, not in concert with the wheel. Sometimes the caps dont have a very snug fit and can move around after driving (i.e. you install the cap pointing at the valve stem but then after a drive the crest is pointing somewhere else). So to prevent it from moving a small dab of silicon will keep it in place.Aren't they supposed to rotate with the wheel? Otherwise when you stop they won't point to the filler cap unless you stop in exactly the right place.
I did that on my Macan.A smallish allen key and a pair of pliers to grip it. I also used a very slight smear of grease (special Porsche grease of course) on the flanges to make them snap back in easier.
<drum roll>Well @Robsx I for one can now rest easy knowing your Porsche emblem is properly aligned with both your valve stem AND your security bolt! (Big sigh!!) My dealership is replacing my front tires this morning (and doing my 30K mile maintenance) and I am looking forward to in what shape my wheels are returned to me.
Well, not much. When I first heard about this thing, I rushed down to my car and everything was fine with the emblem pointing to the air stem. Go to the track a couple of times and check your lug nut torques, you soon learn the value of having the security bolts behind the rounded part of the emblem.<drum roll>
That's the way I have security lug with valve stem on 20"s.