S55 crank hub discussion? You woke up and chose violence today 😈

Tbh crankhub failure is 95% of the time user error, if your not someone that takes it easy on your car then id consider doing it. If you plan to make upwards of 500hp or if you have a model that has close to 100k miles on it, then id also consider doing it as well. It's nice cause w/ the crankhub you get all preventative maintenance done, so its kind of in you favor in that case. You get the oil pan gasket done, valvecover gasket, coolant flush, and much much more, so that could make it well worth it if you plan to keep the car over 100k miles, or at least till then. By the time an S55 gets close to 80k-100k miles all that preventative maintenance is going to need to be done anyways due to seals having to many heat cycles & fluids just simply getting old. So if your someone that can take it easy on stage 1 and you just commute to work M-F and just get on it on the weekends (how I do), you will be more than fine, don't worry about it. Just don't be downshifting your car to redline consistently, especially in 1st & 2nd gear. I have plenty of friends w/ s55's running bm3 stage 1 w/ no crankhub and they've never had any issues. There is a reason there was never a recall for the crankhub….. and why it was never covered under warranty, in most cases that is. Also don't forget BMW's M division ran the M4 GTS with 493hp on the S55 with no crank hub fixes, issues, or anything. This how you know the S55 stock crank hub is good for somewhere close 500hp without having any issues. Again, that is if your not downshifting to redline in 2nd and 3rd all the time.. Hope this helps some of you!

Thank you so much for this vlog, got to say the most balanced discussion I’ve heard regarding the “crank hub failure”. My F80 M3 is stock and I have absolutely no interest in increasing the power so have never considered doing anything to it. The car is still under warranty this is also another reason I would not have anything done to it. 👍

Just had my 2020 M2C bolt capture done by Litchfield along with a stage 1 upgrade to just over 540hp and Bilsteins all round. If I would have had to choose just one upgrade it would be the Bilsteins. It transforms the driving experience completely. They strongly recommend a crank hub fix if you are upping the power and they should know as they are the best in the tuning business for BMW's. They claim to have had quite a few power upgraded M2's revisit them who chose not to have the crank hub fix done first time round only to present them with a big bill on their subsequent visit, way in excess of the the cost of the original fix. If you are upgrading power its not worth the risk unless you have loads of money to spare..

Man this is scary. I plan on keeping my M4 stock, I barely redline it and yet I’m still considering this.

Love your channel. I have a f80 that I bought new. Manual transmission. Missed a shift from 4th looking for 5th and hit 3rd accidentally and broke a plug. Thought it was crank hub. Love your videos. Keep it up. I have a bootmod cs tune. But stage 1 when that happened

Good points for sure! Im currently running a bolt capture and so far so good. Know plenty of people running bolt captures with high horse power with no issues👍🏽.

100 octane tune, 116,000miles full bolt on tune....only issues so far was 2 fuel injectors stuck open....replaced fuel pump and injectors ( stock ) injectors...had a high output fuel pump, it was trash, fuel gauge wouldn't read right and the pump didn't operate correctly, leaning out at fuel throttle or high loads....replaced it with a stock bmw pump...cars runs strong

Had mine done and worth the peace of mind

Mine slipped at around 50k. Didn't slip enough to cause the valves to get hit so I was lucky. Here's my info. Tune: Running BM3 Stage 2 93oct tune for over 40k miles Power: Dyno'd 500whp 520wtq Transmission: 6MT never had a money shift or any kind of over rev Driving style: Driven pretty hard but not abused. Track days, hard pulls, some roll races. Fix: SSR pinned crank hub and VVT crank bolt capture to guarantee the bolt can't back out.

from what i’ve heard, it’s more dependent on kick down, i’m currently around 600whp on a stock crank hub and there’s no issue even tho i do drive hard, but one thing is I almost never use kick down.. like you mentioned about dct vs m/t, it makes sense cause m/t doesn’t have kick down

I have a 550 hp 6mt with 73k on it, no issues. Both the N54 and N55 used the same design and had no issues (largely 6mt or TC autos). I think the problem is DCT boxes and aggressive down shifts backing the bolt out. I would only bother doing this if you have a DCT that you regularly track and/or drive hard.

30k on my 2020 stage 2 manual f87 m2. so far so good. i plan to keep the car for a while and do the crank hub and upgrade the turbos while im at it. edit: also had a stock 2018 dual clutch f80 m3 with 35k on the clock when i sold prior to the m2 with no issues

I was under the impression that BMW beefed up the crank hub from the 2017 models on. keep in mind that depending on the car you have the S55 has various HP ratings stock. For example, would the crank hub for a M3 or M4 be under more stress than a M2?

Great video can you give a thought's on s55 crank hub bolt capture?

I have stage 2 right now and have drove 12,000 miles so far and I have no Crank Hub issues. Sometimes I drive it rough because you can’t drive that kinda car in normal mode. You just can’t it sounds too good and feels too good. I am think of soon doing it and my vehicle has 33K miles. I think if you ran any kind of tune on your M3 And you drive a lot of miles with no issue, you should get it done because maybe no more luck lol

Hard to justify getting the crankhub “fix” at/around/below M4 GTS level power

i spun my stock CH and was under warranty in february, about a week ago, it spun again, i was flashed stage 1 for 1 day, hadn’t even driven it hard, and it spun again, warranty denied fixing because of stage 1 flash. both times that i spun it was just a mild spin and just need retimed, car is going in next week for full crankhub fix

What are your thoughts on DCT flashes with regards to potential CH issues?

I would like to have an explanation of what it is mecanically that makes power output dangerous. I also wonder wht BMW motorsport never have any problems on their race cars.

I was speaking with the owner of Active Autowerke about this. He says he doesn’t see this as an imminent problem for the F80 from his experience. I believe him, but could this be a problem that becomes more likely as these cars age? I don’t think anyone knows for sure. I’ll get mine done when the car is a decade old with approximately 75,000 miles. My car is mostly stock and manual.

after everything I’ve heard it , seems like the people who break their cars are just bird brains who don’t know how to do proper supporting upgrades to their motor. I don’t see the purpose of doing fuel upgrades when you could just bulletproof your engine first.

Just doing cbc alone is fine below e85. Just make sure crank bolt tightened down before doing it. If you don’t believe me find me real specific examples of sch with cbc that wasn’t a money shift.

Great video. It’s a lot of misinformation in the forums. So I think a good idea for a part 2 would be talking about some differences between the two recommended options.

The crankhub will never be an issue stock r&d definitely goes through this, the e92 has rod bearing issues but that’s after 100k miles if Bmw tested the motor to 100k miles they would’ve change it. Crankhub failure is just the cost of modifying ur car shit goes bad happens on every car jus pricier cus pricier car

Would getting another crank bolt torqued to spec a somewhat good idea? I always hear it spins because the crank bolt backs out of the crank

Hi Omar definitely if you are tracking or going for big power otherwise you should be ok 🇬🇧👍🇬🇧👍

Bro this white m4 is so clean 🙏🙏🖤 have you more photos? Please give me link.

I understand the S55 may have no issue if in stock form, but this is a really bad design full stop. These engineers know that there could be a failure if an increase in power is realised so why not just key it to start with. What would be interesting to know, is what they do on factory backed race cars. DTM cars and the like. I'm new to the whole BMW thing having just bought a 2015 M4 only 2 weeks ago. Its stock, so I'm not to worried at the moment. My issue is that there is no one in my city who has done this mod so my car will have to be transported 2500kms round trip to have it done. All in I'm looking at around the 8k mark to have this done. All that aside I really like this car and enjoy the drive. I'm currently finishing off another build at the moment and said to myself just leave it as it is, then I went and bought the LED race wheel. And so it begins, Lol.

Is this something necessary for the N54 also?

Drive in manual mode and avoid heavy kickdowns and you aren't very likely to have crank hub problems standard or stage 1.

Any update of the F02

I've been on full e85 for 1yr now and roll race alot zero issues I just never downshift aggressively.. I just recently put on the bolt capture plate I also have a friend who's been on e85 2yrs now no issues

Do you have any experience with the crank hub capture. I have it on my stage 2 f82.

it also sucks that we have to worry about the shops drilling the new hubs incorrectly at a wrong angle, which could make the situation even worse. I wouldn't even trust myself to install a 4-pin/etc lol (Not saying i'm very mechanically inclined)

How likely is the hub to spin on a 6mt vs a DCT? Anyone have knowledge on that? I've been thinking of getting my hub done, but I'm in an 6mt '18 Comp, 59k miles. Thoughts?

great, concise video. interesting how E85 seems to dramatically increase the case rate for crank hub issues. i wonder what the reason is behind that

Do you know any reliability issues with the 2017 440i gran coupe with the stock factory M Performance kit? It has the B58 engine

Hey men i would like to get those exhaust tips on my m4 can you send me the link were you get it

Great Great video bro, this needed to be talked about! I swear its always the E85 tunes that spin that shit. lol 90% of my Spun crank hub stories are all E85 tunes

I think "Plagues" is much too strong. I think it's an item of concern for a specific set of owners, but "Plagues" is much, MUCH too strong. Now, if this was like Subaru headgaskets or ringlands, sure, I would agree with you, but it really isn't. I like your content so I just wanted to comment, but I'm gonna do what you said and bounce from this video.

Get ur fix done, spun my m2c stage 1 (1500km) with 13000km 2 days ago

Cool video

is the crank hub an issue in the s58 engine also ?

I know a lot of stage2+ F8X who have had thousands of miles on stock crankhub with no issues. I can't justify spending 4K+ on a 1% chance of you spinning the crankhub.

it really sucks that these cars are so complex but still have an Achilles heal... unfortunate to say, the engine can't push big power reliably compared to the japanese straight 6's we all know and love. I have accepted that fate.

Dishing out 4-5k just to mod for more power is not it. Selling for this reason

I’ve seen so much on yes and no to this but ultimately I figured it was relatively cheap insurance due to some people with stock cars having the problem. 3k to make sure it doesn’t happen or 20k if it actually happens. I’m no mathematician, but one of those numbers is significantly smaller than the other. For those that are saying it’s a rare issue and it isn’t worth it because of cost - if you can afford to be driving an almost $80k MSRP car then 3k shouldn’t be a problem and if it is then you’re driving the wrong car - your budget income and priorities are all fucked up.

I upset everyone who thinks it's power related and say it's not. It has nothing with power to do.

damn is there any m car that doesn't have a major engine repair owners must research and worry about???

Big fan of the channel but gotta liven things up if you gonna get on the topic. Hardly anything of value provided to the conversation here opinion or not. No discussion of types of crank hub types. Few if any examples. Listen. to someone monotone review a maintenance part they are considering is as entertaining as listening to someone monotone discuss oil changes and how he once rode wit a guy who waited a month too late on an oil change and the engine died. Correlation does not equal causation. IF you have money to burn and you've spent 5 figures on performance everywhere else its a no brainer. Im personally skeptical on the average owner that isn't trying to push the limits of a car and become surprised when things break. Every platform has things that break when you push past 25% increase in power. Factories build cars tamed a bit lets just say 10% so when you push double past that. You are literally past the capacity and efficiency of numerous components of the car. It seems more appropriate to call this a requisite for Stage 3 vs trying to suggest the average driver need to shell out $3k in parts $1k in labor (if lucky) on a part power hungry guys trying to make 600 hp could've just bought the next tier model car for similar money less stress.

It doesn’t need it. Issa myth

Hey what happend to his other m4 ??

Hey man i got a f90 m5 does it have a crankhub? Can i tune it with no worry