I had an inspection done by my BMW specialist this morning where my 5-serie is also maintained. I certainly didn't buy the Z4 blind, but I wanted to know a little more details.
Fortunately, nothing crazy came out of it, other than some wear and tear and possibly some preventive maintenance.
For example, two hydro bearings are getting weak. rear shock absorbers are starting to rust a little and the coolant pump needs to be replaced.
And as a preventative measure, they say to replace the coolant expansion tank because it is still the original one.
The rest is in very good shape they said, as I thought, but nice to also have their confirmation
The Z4 has various engine sound modifications, which I already knew of course. But I find it too loud inside at highway speeds.
Now the question is how I am going to solve this, it is difficult to estimate in advance what the influence of a modification will be.
It now has an aFe Power air intake, which is fine I think. But the inward intake can be adjusted. There can be two foams inside the sound generator, I don't know how many it has right now, but I suspect none. My questions are:
- Is the aFe Power intake also adding more sound to the interior?
- Does anyone know where I can get new foam for inside the sound generator?
- Is completely shutting off the sound generator to the inside too much? (the garage said this was also an option)
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