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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Jun-04-2015, 08:48:33 PM   #1
Obioban
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Thumbs down PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

This was seen when pulling apart a bearing thet had already developed slop on a friend's car (concerning given how shortly they've been on the market).

Called to confirm and they can't/won't say where they're made, but they did confirm they're not made by BMW and are from an "overseas supplier" that is not in Germany (meaning not Lemforder, etc).

Really regretting putting these in my car 2 weeks ago. Did so because I was under the impression it was a BMW part (long lasting and silent).

Ugh






Edit 9/10/16:

So, update.

I'm reasonably confident the bearing bimmerworld is using is made by OCAP. They're an Italian company that has their bearings manufactured in India... and generally not the highest quality components.

The bearing in question is OCAP's replacement for a bearing BMW uses in the e90 rear control arms (33 32 2 406 292) and X1 (33 32 2 409 891). Unfortunately, BMW doesn't seem to sell the bearing without the arm it's used in.

Good news, however-- Lemforder (who is the OEM for many of BMW's bearings, possibly including this one) does! Lemforder part number: 30679 01

Pic with one of the OCAPs that bimmerworld uses on the left and OE on the right:





Still have to check the ID/OD/radiusing of the OCAP compared to the lemforder, to see if they're modifying it at all, but the good news is that if you have the bimmerworld monoball RTABs, and your bearings have failed... likely you can now upgrade to a lemforder when you replace it. And now we know where they're made, so you're free to judge their quality for yourself. I will be switching mine out next time I need an alignment, if it's possible.

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Last edited by Obioban; Sat, Sep-10-2016 at 08:24:56 PM.
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Old Thu, Jun-04-2015, 09:21:47 PM   #2
WyattH
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

Are you saying the BW bearing developed slop already above the slop inherent in their initial design? That stinks. I was going to get these if/when my Dinan units give up. I guess you get what you pay for, $200 for BW housing and OE bearings was too good. Thanks for the heads up.
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Old Thu, Jun-04-2015, 10:14:33 PM   #3
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

Damn that's unfortunate.

Maybe Dinan is the way to go.
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Old Thu, Jun-04-2015, 10:22:37 PM   #4
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

sorry you had to learn the time consuming way with BW products.
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Old Thu, Jun-04-2015, 10:26:49 PM   #5
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

Mine are fine up to know but then again i dont put a lot of mileage on the car. Last time i drove the car they were pretty tight. Will keep you guys updated if anything changes with them in the future.
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Old Thu, Jun-04-2015, 10:36:06 PM   #6
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

Any reason the non-BMW bearings couldn't be swapped out before installation? Obviously it's an extra cost, but even if the extra bearings cost $50 each, it's still substantially cheaper than Dinan.

Last edited by culovero; Thu, Jun-04-2015 at 10:47:29 PM. Reason: Bushings->Bearings
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Old Thu, Jun-04-2015, 10:40:41 PM   #7
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

Quote:
Originally Posted by culovero View Post
Any reason the non-BMW bushings couldn't be swapped out before installation? Obviously it's an extra cost, but even if the extra bushings cost $50 each, it's still substantially cheaper than Dinan.
Yeah that would be a good idea.
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Old Thu, Jun-04-2015, 10:41:30 PM   #8
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

Quote:
Originally Posted by culovero View Post
Any reason the non-BMW bushings couldn't be swapped out before installation? Obviously it's an extra cost, but even if the extra bushings cost $50 each, it's still substantially cheaper than Dinan.
We'd have to find a bearing that fits :P
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Old Thu, Jun-04-2015, 10:46:36 PM   #9
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

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Originally Posted by Obioban View Post
We'd have to find a bearing that fits :P
I guess I was under the impression that Bimmerworld used an unknown supplier's substitute for the rear upper/lower ball joint. If it's a different bearing entirely, that definitely complicates things.
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Old Thu, Jun-04-2015, 11:22:38 PM   #10
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Default Re: PSA: Bimmerworld monoball RTABs do NOT use a BMW bearing

Are these the revised design or initial design? I had bad play with the housing of the initial design, but the new version is much improved. Neither version had bearing slop that I could discern.
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Discussing E46 M3 Market Sales Tracker: Please Report Your Purchase or Sale! in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)