I have the same issue with my G05 and it seems to be more pronounced on hotter/more humid days. Took it to the dealer a few weeks ago, they kept it two days and I got the "couldn't duplicate the issue" response. It rained while they had the car and I think the moisture may have alleviated the problem when they had the car. The problem is now back, and I googled it and it seems to be fairly common among BMW cars. I bought this (Item and BMW Part #. below) after reading a whole bunch of posts and it seems to have worked for many folks. ECSTuning on Ebay seems to have the best price including shipping; other retailers charge $10-12 but add $5-10 for shipping; dealers sell them anywhere between $15-25. Just my two cents...
Gummi-Pflege 831510 - BMW (83-19-2-449-390)
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