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General E46 Forum
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Old 07-20-2013, 10:22 AM   #1
bullet350
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Join Date: Aug 2012
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Unhappy Increased cabin sound

Hello everyone, Took my car in for a tire change and also got the air con filter cleaned. All of a sudden the cabin sound has increased. Like more engine sound is coming thorough. Note: it's not vibration. Outside, standing next to the car sound is the same only more sound inside the cabin.

Any thoughts? Many thanks,

Car: 2001 320i
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Old 07-20-2013, 10:25 AM   #2
Dave1027
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I'd be concerned the tire shop f'd up your cabin filter housing. It's probably something they did.
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Old 07-20-2013, 10:26 AM   #3
conrad721
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Increased cabin sound

which tire brand did u buy and which variant?


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Old 07-20-2013, 10:30 AM   #4
bullet350
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Thanks Dave, what do you think I can do to confirm if its the housing? Thanks,

Conrad- Michelin, same as I had before. I don't think it's te new tires as there are no vibrations. Thanks
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Old 07-20-2013, 10:32 AM   #5
BimmersGarage
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What brand/model of tire..?
If it's an aggressive tread pattern... that would be the reason. Also, if they air it up wrong, either too much or not enough air. You need to double check it yourself.

One last thing - You should Always get your suspension checked and then get an Alignment (by a BMW knowledgeable shop) after getting new tires.

NOTE:
Your tire shop may have not balanced the tire(s) correctly.

Last edited by BimmersGarage; 07-20-2013 at 10:34 AM.
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Old 07-20-2013, 10:35 AM   #6
bullet350
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Thanks BimmerGarage, it's Michelin same type as I ha before. I don't know about the pattern. Should be the same I guess.

The tires were aligned using their bmw computer.
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Old 07-20-2013, 10:36 AM   #7
Dave1027
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Quote:
Originally Posted by bullet350 View Post
Thanks Dave, what do you think I can do to confirm if its the housing? Thanks,
It could be something as simple as a rubber seal that got knock out of place. Give it a really good visual. If it's not obvious then maybe take it back to the tire shop and have them check their work.
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Old 07-20-2013, 10:33 PM   #8
My325XI
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I'm thinking along the lines of post # 2. Maybe the cabin filter is not seated correctly, maybe the cabin filter cover is not on correctly.
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Old 07-21-2013, 11:02 AM   #9
bullet350
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Thanks, on checking again, the cover of the filter was ajar. I closed and tightened it. But sound sill remains. It's more on revving the engine. Thanks and i appreciate te help
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Old 07-21-2013, 12:24 PM   #10
eweis
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Back to the top for a moment......what's an air conditioning filter? Do you mean cabin filter?...or something else.
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Old 07-21-2013, 09:32 PM   #11
bullet350
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Thanks, its the cabin air filter. Any thoughts?

About the sound: At idle, sound is near normal inside the cabin, once the engine revs up say around 2k RPM the sound increases and is quite loud. Outside the car, next to the engine, sound is completely normal.

Appreciate any thoughts.
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