They also spent more time in the shop with electrical gremlins than any car that I've ever seen. One of our employees insisted on a Mini, which is also BMW as their lease car. No other car we had had that much trouble. BMW is a crap brand that used to make very good cars. Mercedes is getting there. Neither of these will survive in the longer term if they don't somehow get back to their roots: making safe and reliable vehicles with good resale value. But for both companies the problems are in the same domain: they never got the hang of software.
Apple's "pentalobe" screws tell you the same about that company.
The key issue here is that repairability is currently not really factored into the sales value of the car. That's a bit naive of course because it actually does impact the second hand value of a car. For example, MG makes nice cars but they have a bit of a reputation for needing lots of repairs under warranty. That reduces their second hand value and therefore also impacts their new value. You can get some really good deals on second hand ones. But the repairs might add up. That's why the second hand value is so low.
Lease companies buying new BMWs to lease them out to high salaried executives expect to be able to sell these things on 3-5 years later and get a decent second hand value. If the car then has a reputation for being a bit difficult and expensive to work on (like MG), that is going to reflect in the second hand price. And the lease price. Mostly lease companies just pass that on in the lease price. That works for BMW until more competitive vehicles show up that can be leased at a lower cost.
A few quirky bolts won't move the needle here. They aren't going to get rich selling them or the tools that go with them. It's just a bit of minor friction for car repair shops. If they see enough BMWs in their shop, they'll get the damn screws and tools. It's not that different than Apple using custom screws on their devices. Every phone repair shop has the tools now.
(Their motorcycles had a better rep until now.)
No they didn't. Driveshafts are notoriously bad. It's the kind of failure that leaves you on foot in the middle of nowhere.
I think this is a pretty good mechanical design in general because:
- large contact surface (like hex or torx)
- no chance of slide-out (like flathead) or torque-out (like Philips)
- you can use a different size screw bit than the screw, and it wont slide around, or destroy your nut like torx does with hex
If this were a production run of a few dozen super high grade aerospace donkey dicks with five shoulders and four pockets, an oil channel, a precisely engineered break point and a 12-step heat treat process I'd say yeah, make it on your Swiss lathe with live tooling or bajillion axis VMC or whatever.
But this looks to be a simple small, probably cosmetic or otherwise low-ish strength stainless or chromed fastener that BMW probably wants a few hundred thousand of. You'll be time, money, labor, frustration, managerial nitpicking, just about everything, ahead to just have the fastener industry and their existing expertise make it for you. The "bespoke" drive, the custom branding, those are all known-knowns to those guys. They'll whip up tooling for their screw machines and fill the same bucket in 1/20th of the time.
https://www.youtube.com/watch?v=WJvQZko8uiU
Edit: replaced video link with better one. Obviously there's fiddle fucking around they're not showing and they're mix and matching footage of different products but the speed things move once you've got it all set up is broadly accurate. A whole bunch of these steps would be skipped or altered for a stainless fastener.
Here’s a good video that eli5’s the difference between a Swiss screw machine and conventional CNC.
https://youtu.be/y3y0tATB0lg?si=pkYDT3BV0-6C-aq5
And here’s a video with a high quality soundtrack that shows how the machine combines automatic lathe cuts, mill cuts, and thread rolling without changing machines, swapping cutters, or re-fixturing the work.
https://youtu.be/MPAK5I1HJAw?si=fnMmjDp6ydYSDbfH
And if you need some specialty fasteners made and have an unlimited budget I can reccomed these folks.
https://www.advrider.com/f/threads/crash-in-destruction-bay-...
If they really wanted to screw (pun, sorry) with repairability (and at significant cost to themselves), I guess they could start making their own taps and dies for nonstandard threads you can't buy anywhere else. Wouldn't stop them from being unscrewed, though.
German government will do everything possible to prevent these companies from failing, no matter how bad the situation gets. This means that current management can simply apply the "next quarter" strategy without any realistic downside.
Much of Sega v. Accolade was overruled by the DMCA, which explicitly makes defeating DRM a crime in the general case. But the prohibition against using trademarks to gatekeep people performing legal, nonfraudulent activity probably remains and may be cited in future cases.
Just because there's a workaround for an unnecessary annoying thing doesn't mean the thing ceases to be unnecessary and annoying.
They have clearly lost their way. Seems like a fundamental loss of confidence in their ability to produce leading technology, and instead feeling like they must defensively focus on blocking and extracting maximum funds from customers, both with costly "authorized-only" repairs and subscriptions for heated seats.
Sad
BMW has done some despicable things as pointed out by a recent article, like welding in a pyrotechnic fuse that would kill the battery when the car detected a fault, and which could only be replaced by cutting the factory sealed battery case open, or installing 'theft protection' measurers, which could brick ECUs if an unlicensed repair shop would attempt repairs on the car (which have been known to trigger even when the dealership attempted to fix the issue using official tools)
It sounds like you are defending both the design and the decision with nothing said about it being a poor method.
Which what? I honestly don't understand what the comparison is or what is misunderstood as there is nothing to misunderstand - it's a proprietary screw designed to defeat self/unlicensed repair - FULL STOP. Fuck the technical merit. And the point of mentioning that Chinese factories can produce cheap knock-offs is to demonstrate how absurd of a anti-consumer measure this is.
Right now I’m driving a BMW IX2 and it’s the stupidest fucking car I ever drove.
I had booked a Polestar 2, which Hertz unfortunately didn’t have available. Great car, that one.
If you guys want, I can message him and ask about the grand conspiracy behind it but you might be disappointed.
(My E39 M5 was one of the last user-repairable BMWs, but it's getting very expensive. On the other hand, it's driving a significant market for regular people designing and building replacement parts, whether 3D-printed, CNC'd, or homemade)
You used to be able to take spammers to court individually as well, now we have the fuckall federal enforcement that protects them more than it does us.
What's expensive here is milling this screw head at all, and in particular the surface finish.
This is probably just a prototype for shows, though. At scale, screws heads are usually cold-formed, and this design would work for that, too. If you circular brush the head in the end, you'd get pretty close to this, even if you wouldn't get the finish in the pockets. But that doesn't make much sense there anyway, it'd get damaged by the fastening tool.
Fiber optics bit https://www.qocese.com/product-p-381399.html
Magnetic Spanner bit https://www.amazon.com/Magnetic-Security-Screwdriver-Electro...
Clutch bit https://www.amazon.com/Clutch-Vintage-American-Steel-Sizes/d...
Mind this is a screw for a press release macro photo. I doubt they're going to put the same effort into making them at scale.
Lots of pros use a hand screwdriver and they never strip heads/threads/etc
Torx and hex already solve the slide out problem.
Which part of this makes you think "Hmmm yes this is great design"? What would bad design look like to you?
https://www.rideapart.com/news/776212/bmw-r1300rt-cardan-sha...
https://alerts.home-assistant.io/alerts/bmw_connected_drive/
https://www.reddit.com/r/homeassistant/comments/1n8tidg/bmw_...
The quicker they bury themselves the better for everyone, more market space will remain for good car manufacturers