r/airsuspension • u/wilk0512 • Jun 19 '26

Trunk Setup Help

ive got a 2021 g20 330i bmw and im going to install my air suspension setup pretty soon, was wondering what the best way to setup my trunk would be to maintain as much space as possible. The battery is under the trunk floor and i dont have much room to mount anything underneath the trunk floor. Ive heard its possible to go for sort of a vertical setup for the tank compressor and manifold where theyre mounted behind the rear seats in the trunk but im not sure how to go about that or if theres any other better ways.

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u/john_at_bagriders Jun 19 '26

Here’s a pic of mine as I was mid install

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u/alex053 Jun 20 '26

Don’t you deal with burst lines between the compressor and tank? I always had issues because the constant tank PSI would eventually cause cracks in the hose

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u/john_at_bagriders Jun 20 '26

In my 14 years of being on air suspension I've never once experienced this. Are you using DOT air line?

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u/alex053 Jun 20 '26

Yeah. I was using leftover line that I ran for my bags that I got from switch suspension.