[pengpeng28]

Hi I just picked up a new g87 m2 (coming from electric so excuse my lack of info here), is it normal to hear the sound of the timing belt inside the car when the engine is on?

[RockCrusher]

Originally Posted by pengpeng28

Hi I just picked up a new g87 m2 (coming from electric so excuse my lack of info here), is it normal to hear the sound of the timing belt inside the car when the engine is on?

The M2 (S58B30T0) engine doesn't have a timing belt. The cams are driven by chain.

Link to engine details:

https://en.wikipedia.org/wiki/BMW_B58

Being you are coming from an electric car you might just be hearing -- for the first time in a long time -- normal engine noises a running IC engine makes, a high performance engine.

For instance there were posts from new owners about the noise that I think arose from the radiator fan running at an elevated speed at (warm/hot) engine start.

My advice would be you have the car in at the dealer and demo the noise and hear what a professional tech has to say.

Added: Forgot to mention but of course the engine has other belts, rubber belts, and a variety of hardware associated with these belts. The hardware -- I'm thinking bearings of the idler rollers, tensioner roller -- could be noisy. (Early on with another brand of car it manifested a noise -- "dry" bearing sound -- that proved to be due to the premature failure of an idler roller bearing.)

But if there is an abnormal noise I'm sure the tech will pick up on it.

[BroDoze]

The Direct-Injection cars are noisier than usual now. Some almost have a diesel sound to them. This may be what you’re hearing.

[M_Power Rob]

Here is a better response to the OP, what is the noise you are hearing (what does it sound like)? Maybe post a video if it is loud enough that you think it may be an issue.

[CadolinaRipr]

Originally Posted by M_Power Rob

Here is a better response to the OP, what is the noise you are hearing (what does it sound like)? Maybe post a video if it is loud enough that you think it may be an issue.

This^

[daddyjaxx]

Originally Posted by RockCrusher

The M2 (B58B30M2) engine

Ahh yes... The legendary B58 M2

[Carefree]

Originally Posted by daddyjaxx

Ahh yes... The legendary B58 M2

Special order option.

[pengpeng28]

Here is a video link of the sound

https://youtube.com/shorts/7Z8tHD0ruqQ

[DomMuc]

Originally Posted by pengpeng28

Here is a video link of the sound

https://youtube.com/shorts/7Z8tHD0ruqQ

i only hear regular engine Sounds.. nothing wrong... if this is your issue.. get an ev again :-)

[KC87ZB]

Probably best checked with the hood open so you can try to pin down the sound and where it comes from. It sure sounds louder than mine but I think someone with RHD needs to chime in as us LHD folks are on the intake side, not the exhaust. Sure sounds like DI noise to me though.

[RockCrusher]

Originally Posted by daddyjaxx

Ahh yes... The legendary B58 M2

I cut/pasted the wrong engine model. My bad. Corrected it.

[RockCrusher]

Originally Posted by pengpeng28

Here is a video link of the sound

https://youtube.com/shorts/7Z8tHD0ruqQ

Sounds normal to me. Sure a bit noisy but you are outside of the car and you can hear the engine better.

With your time with an EV I believe you have forgotten how much noise an IC engine can make a healthy IC engine. Lots going on in the engine. There's a reason why the engine has a plastic cover over it.

But if you are concerned have the car in and have a tech give a listen.

[two_three_two]

sounds like a totally normal cold start.

[BroDoze]

That's the Direct Injection clacking. Normal. 135i N54 had it super loud. All my Subaru DITs have it loud. Sort of a diesel sound.

[pengpeng28]

Phew thank you all 😅