New Member - e88 125i noises

[AfricaM]

I am a new member to the forum.

Driving an e88 125i for 7 months now. Mileage is on 81xxxkm.

I am looking for a reputable bmw mech/specialist to help diagnose 2 noises my car has.

The one sound sounds like some frequency sound like a cellphone interference.  Even when the radio is off I get that sound.

The other sound is a sound that goes up with the cars revs.  Similar to the sound you would have if you have a badly wired amplifier in your car.  I have no aftermarket sound system in the car. 

I went to a battery center for them to check my battery.  They said alternator is OK, battery worn.  
I am not sure that I trust them because they are in the business of selling batteries. 

I am in the Pretoria East area - Equestria, so preferably someone not too far.

Any suggestions.

Thanks.

AfricaZ
:ty:

 

[Zero14]

Welcome to the forum man!I experienced that noise in my other cars when something wasn't grounded properly. I'm sure the other guys will be able to give some better advice, also post some pics of your ride

 

[AfricaM]

Welcome to the forum man!I experienced that noise in my other cars when something wasn't grounded properly. I'm sure the other guys will be able to give some better advice, also post some pics of your ride

The noises are irritating the hell out of me! I hope to get it sorted out! 
I don’t know how to post up photos here... advise on how to do that!

 

[MARK M3]

welcome and good luck with figuring out the noises.

 

[Gordvisr]

that noise, if not coming from the speakers, is normal, it sound like a far off whine ?

 

[AfricaM]

Yes it sound like a far off whine. Even when the radio is off the whine is there going up and down with the revs.
Is that really normal ?

 

[Gordvisr]

mine doing this since ownership, 4 years ago, my 328i had the same noise, slightly diffrent.

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o yes and please share a pic of your ride too.

 

[AfricaM]

This sound is honestly irritating me, so if it’s normal it’s a disappointment for me!
I don’t know how to share photos onto this forum!

 

[MARK M3]

I found it easier to share pics from the Tapatalk app..