Soundproofing to reduce road noise and boominess?

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SuperPoly

Active member
Joined
Oct 1, 2021
Messages
40
I find a lot of the sounds in the i3 to be "too much" when driving over rough surfaces or at highway speed.

Has anyone attempted to add soundproofing material (mass-loaded vinyl) to the doors, or other areas?

One other thought to reduce boominess over bumpy roads was to add butyl sound deadener to parts of the frame.

Since the frame is carbon fiber re-enforced plastic I am wondering if it would be effective as on traditional metal frames. The boominess tends to come from the rear part of the car.
 
SuperPoly said:
Since the frame is carbon fiber re-enforced plastic I am wondering if it would be effective as on traditional metal frames.
An i3 has an aluminum frame. The suspension, battery pack, aluminum frame rails, etc., form a "skateboard" base upon which a CFRP passenger cell is bonded. The source of the booming over rough roads might not be easy to identify.
 
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