DIY Floating 68mm and 53mm caps!

Christopher72

Active member
 Ohio
Site Supporter
My son was admiring my floating caps on my 2011 Z4, but didn't want to pay the >$120 USD that they are currently going for - specifically for the 50th anni caps. His is a White 328xi. So we looked into making them.

We found high quality caps on Amazon for $14. They look real and were identical to his existing caps in manufacture... They looked oem installed - except.. durn.. they aren't floating.
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We located a STL/3MF that seemed to be the best design at makerworld. 1112828-floating-center-caps-68mm-for-bmw-wheels . There are quite a few out there and some of the designs aren't free. This isn't my design, so proper attribution/accolades to maker MariusZ for his design. I'm sure there are others to choose from - which is also very cool that so many ppl are sharing their designs for the DIY world.

This is what it looks like completed -- since we didnt take any pictures of the make or installation -- you get to see dirty January wheel.
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But I found a draft ASA prototype in the trash so I took a few pictures of it to show the simplicity

Some cheap bearings -- many of those at my too many kids household.
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The maker sized the weight holes for something he already had on hand. We didnt want to purchase anything, since the whole goal was to keep this cheap.
We used some junk nuts and hot melt glued them in place. Just need enough weight to tell the 608-2RS bearing to wake up.

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All in all, we spent less than $25 USD to replace his caps with new floating ones - the old ones were pretty ragged and needed replaced anyway.

If you're not a 3D printer enabled DIY person, you can have a 3rd party print these out --either friends, or services. I recommend 100% infill, and to use a hybrid like ASA-CF or even PETG-CF. Both ASA and PETG will work from a longevity aspect, but they are both brittle. Dropping a sample of ASA without CF led to fracturing the holding tabs. That's what made us switch to the carbon fiber embedded option.

Happy Printing!
 
Thats very cool. Good use of 3d printing. Let us know how they hold up over the next few thousand miles!
 
For the love of God…it’s a major Federal crime to have floating wheel caps…then..to expend so much intellectual capital and skill on making a copy…🧐🙁🙈🤣
 
For the love of God…it’s a major Federal crime to have floating wheel caps…then..to expend so much intellectual capital and skill on making a copy…🧐🙁🙈🤣
Perhaps there's a cultural 'revolution' happening.
I'm trying to put a positive spin on it. :)
 
Perhaps there's a cultural 'revolution' happening.
I'm trying to put a positive spin on it. :)
Maybe you, Pondrew and moi should form the ‘cultural alliance’..protectors of all that is Holy on Z4s?🤔🙏🫡😳
 
For the love of God…it’s a major Federal crime to have floating wheel caps…then..to expend so much intellectual capital and skill on making a copy…🧐🙁🙈🤣
Not a fan, Peter? 😂
 
Not a fan, Peter? 😂


It’s a difficult one…

Do you on seeing the photos, expressions of wish and intent ?

Not respond ?

Positively endorse / congratulate without reservation?

Politely comment in a very subtle way?

Make structured comments ?

Express mild disapproval ?

Take the piss / rant / decry ?
 
Not a fan, Peter? 😂

Personally here’s my bigoted view..on E89s..and to an extent on other Z4s

Big no

Front splitters
Stubbies
Carbon fibre mirror caps
Any form of rear wing attempt
Non standard BMW ‘blue’ logos
Rotating wheel caps
Glass / Perspex rear wind breakers
20/25 profile tyres
Any Chinese tyres
Wires to ancillary devices in the cabin
Diamond pattern carpet mats
K+N filters
DCIs or pod air filters
Side skirts especially c/f fake or otherwise
Gutted / deleted back boxes / resonators
Large android screens
Alloy valve covers
C/F faux otherwise on engine covers
Early G29 faux grills
C/F faux otherwise exhaust tips
Chinese digital instrument clusters
Cheap Chinese shocks / springs
Tri colour front grills
General M homage without good reason


Depends

Various ‘cheap’ looking alloys
M badges
Most wraps
Most aftermarket Chinese headlights / tail lights
Many aftermarket exhausts

I’m sure I’ve missed some..🤔😳🙈🤣
 
Updated list..spot the additions!

Personally here’s my bigoted view..on E89s..and to an extent on other Z4s

Big no

Front splitters
Stubbies
Carbon fibre mirror caps
Any form of rear wing attempt
Non standard BMW ‘blue’ logos
Rotating wheel caps
Glass / Perspex rear wind breakers
20/25 profile tyres
Any Chinese tyres
Mixture of run flats and non run flats
Mixture of makes front and rear
Wires to ancillary devices in the cabin
Phones tacked to the dash or windscreen
Diamond pattern carpet mats
K+N filters
DCIs or pod air filters
Blow of valves rather than diverter valves
Side skirts especially c/f fake or otherwise
Gutted / deleted back boxes / resonators
Quad exhaust adaptions
Large android screens
Alloy valve covers
C/F faux otherwise on engine covers
Early G29 faux grills
C/F faux otherwise exhaust tips
Chinese digital instrument clusters
Cheap Chinese shocks / springs
Tri colour front grills
General M homage without good reason
Maxton add ons if not covered elsewhere!
ANYTHING hanging from the mirror
Giving your car a name eg ' Dorothy'


Depends

Various ‘cheap’ looking alloys
M badges
Most wraps
Most aftermarket Chinese headlights / tail lights
Many aftermarket exhausts
Wide body kits..especially on 23i!
Window tints

I’m sure I’ve missed some..🤔😳🙈🤣
 
Updated list..spot the additions!

Personally here’s my bigoted view..on E89s..and to an extent on other Z4s

Big no

Front splitters
Stubbies
Carbon fibre mirror caps
Any form of rear wing attempt
Non standard BMW ‘blue’ logos
Rotating wheel caps
Glass / Perspex rear wind breakers
20/25 profile tyres
Any Chinese tyres
Mixture of run flats and non run flats
Mixture of makes front and rear
Wires to ancillary devices in the cabin
Phones tacked to the dash or windscreen
Diamond pattern carpet mats
K+N filters
DCIs or pod air filters
Blow of valves rather than diverter valves
Side skirts especially c/f fake or otherwise
Gutted / deleted back boxes / resonators
Quad exhaust adaptions
Large android screens
Alloy valve covers
C/F faux otherwise on engine covers
Early G29 faux grills
C/F faux otherwise exhaust tips
Chinese digital instrument clusters
Cheap Chinese shocks / springs
Tri colour front grills
General M homage without good reason
Maxton add ons if not covered elsewhere!
ANYTHING hanging from the mirror
Giving your car a name eg ' Dorothy'


Depends

Various ‘cheap’ looking alloys
M badges
Most wraps
Most aftermarket Chinese headlights / tail lights
Many aftermarket exhausts
Wide body kits..especially on 23i!
Window tints

I’m sure I’ve missed some..🤔😳🙈🤣
It's a good job the colour yellow isn't on that list :rofl:
 
It's a good job the colour yellow isn't on that list :rofl:
BMW never made a ‘bad’ colour…just the blacks, silvers, greys and whites were a bit average..85%+ of the 125k made..

Yellow, Red, Blue and even Orange are the goto colours…imho 🫡
 
BMW never made a ‘bad’ colour…just the blacks, silvers, greys and whites were a bit average..85%+ of the 125k made..

Yellow, Red, Blue and even Orange are the goto colours…imho 🫡
Apart from Sterling Grey of course IMHO :)
 
Dorothy is fairly pissed at your bigotry :ROFLMAO:

The floating caps are obviously an efficiency item. Adjusting the regular caps to level manually every time you stop is quite tedious.
If they actually looked different than standard caps, I'd probably agree with you. But you can't tell, except that they are all correctly level when parked.

and stubbys only get whippy when then need to....

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Thats very cool. Good use of 3d printing. Let us know how they hold up over the next few thousand miles!
I'm sure those bearings will heat up, but I don't think they will get hot enough to degrade the ASA-CF. At least the cost of risk is low. My floaters look like they were made of ABS.
 
Referring to B21's list, balance in the universe is necessary. The interplay between opposing forces—positive and negative creates and maintains stability and enables existence. This equilibrium is not just a moral concept but a physical law, where every action has an opposite reaction, ensuring that total energy remains at zero. So, keep adding those floating wheel centres, stubbies, G29 stylee grilles, extra large iDrive knobs, to maintain universal balance. As a species we have developed through continual modification of our environment, who knows the future importance of the simple floating wheel centre in mankind's furure. 🤔
 
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