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Old 01-13-2013, 05:57 PM
Dale K Dale K is offline
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Location: SE WA State
Join Date: Apr 2011
Posts: 51
Mein Auto: '00 M Coupe
I just went through the butyl tape thing. Turns out it's very easy to get if you know that it's also sold as a product for installing windows. NAPA has it or can get it, such as this:

Under $10 for a 15' roll, super sticky and stuck well even when applied at about 40 degrees. I've only used it for one door panel (foam vapor barrier) so far, but it appears that the 15' roll will do both doors.

1/4" is about the right size. The stuff is also easy to find in a thicker diameter, but much more than about 1/4" would be too much.

I have a Z3 M Coupe, but your Z4 should probably have the same stuff. (I also noted that people trying to tell you how to take off the door handle surround have Z3's, not Z4's, and I don't know of the Z3 procedure applies to a Z4).

Last edited by Dale K; 01-13-2013 at 06:00 PM.
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