r/B58Enthusiasts

Hi everybody,

I’m interested in destroke mod on my car (m140i) and I would like to know if someone knows a good company making destroke kit for B58 ? 4N Motorsport started to develop it 2 years ago but nothing to sell about destroke for B58 on their website.
Thanks for your comments.

Any one install a Alibaba exhaust on their g30 that they’ve liked and had no problems with? If you can include sound clips and link to the exhaust you have.

Any other suggestions on exhaust systems i’ll use it

currently want to get just resonator delete but might as well get a whole exhaust system while i’m at it

I have a 2019 640i GT xDrive with a B58 with 41,000 miles. Very well maintained. When gently accelerating at very low speeds (for example, when I'm inching my way forward behind multiple cars at a 4-way stop), the car intermittently "shudders." Once I accelerate beyond a low speed, the car no longer shudders.

Some Googling indicates this MIGHT be resolved by replacing the transfer case fluid.

Has anyone experienced this and, if so, were you able to get it resolved by replacing the transfer case fluid?

Thanks in advance for any and all feedback.

Anyone have a PCV Delete kit installed if so which one? I am looking at the v1 Ross Racing kit dont know which setup I should go with VTA or one with the catch can?

Should I go ahead and can I get an external wastegate instead of rocking the electric wastegate (I’m on stock turbo) and just get the whole VTA kit with CC that fits an external? What’s the best course of action?

Current Mods: very minor

VRSF CATLESS DP
MHD Stage 2
xHP Stage 3 Custom settings

Hi Guys so I bought an m140i about 3 months ago and had a service last week. But I’ve noticed now everytime I turn the car on there’s a screech coming from the engine bay for a split second. And every time the car changes gear, I can hear the screech quite subtly.

Anyone can enlighten me on what the issue is? This noise wasn’t there before the service btw (oil and filter)

Hello everyone I have a 2024 bmw m240i. I just hit 11k miles on the car. I didn’t drive it for about a day and a half then I went to start it up and got a message reading “fill coolant, risk of scalding.” I noticed the coolant level was very low but could not find any visible signs of leaks. I went ahead and filled the coolant to MAX with diluted coolant. Any ideas of if this could be normal or is it possibly a bigger issue? Please help!

For context it does have the M package so it comes with the 19” wheels and I won’t have any fitment issues with an upgrade.

I’m looking to get calipers, rotors, and brakes. I was looking at options but most of what I find is 2500-4000 dollars and the cheaper stuff I find doesn’t seem reputable or I can’t find much on them. I’m hoping to hear that there’s some more reasonably priced options out there that provide performance that’s better than stock while also not having something ghetto like “STOPTECH” printed on the caliper lol

Hi all! I have a 2023 G42 m240i and I am currently still on warranty but I want to get more sound out of my car. I currently have a muffler delete and CAI, but I was thinking of going catless, with NO tune. Am I at risk of overboost or damaging my car if I daily my car with no tune if im catless? Any opinions are greatly appreciated. Thanks!

I used to have a 2013 f30 n55 335i xdrive and I loved the car but it had a lot of issues from the previous owner that were hidden until I owned it for a bit. From the research I’ve done the b58 is a much more robust motor and seems to have minimal issues. I’m just trying to check all the boxes so I want to hear from the enthusiasts who have owned them. Are there years to avoid? Cities to avoid buying from that are notorious for selling junk cars? Models that are better than others? Options that are must-haves (or just something you wish you had gotten)? I have a budget of about 35k and would like to find a nice example, leaning towards the f30 340i xdrive but not entirely set on it. Thanks!