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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 09-24-2013, 03:11 PM
TANGO! TANGO! is offline
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Location: Middletown, CT
 
Join Date: Jul 2012
Posts: 33
Mein Auto: 1997 528i
VAC motorsports adapter not fitting in wheels (with video)

I recently bought a set of wheels from an E38 for my E39, not knowing that they would not fit because of the different hub size. I saw that VAC sells adapters, and their site said they have been tested for no wobble at high speeds, etc. etc. etc., so I went ahead and bought a set of 10mm adapters that came with long bolts and all. I bought smaller tires for the wheels, a size that came recommeded on the car's door. The weels look nice on my car, and they clear the fenders perfectly; however, I noticed a shimmy at highway speeds. After installing coilovers in the rear, and changing my lower control arms -the only links that had to be replaced, since I had already done thrust arms, tie rods and all rear suspension links- I finally managed to isolate the problem: The adapters don't fit right on the wheels. These wheels are very nice, Made in Italy, 16 inch M5 replicas, but when I put the adapter on the wheel I can move it around a little; please watch this video I shot with my phone to see what I mean.



I took them off, put on my winter wheels + tires, and the shimmy is completely gone. If anyone has any ideas of how to fix this, I would greatly appreciate it! Thanks a lot in advance...
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  #2  
Old 09-24-2013, 03:44 PM
DennisCooper!'s Avatar
DennisCooper! DennisCooper! is offline
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Location: West London / Heathrow UK
 
Join Date: Jan 2011
Posts: 1,530
Mein Auto: 03 Ex Cop 530d Touring
Hi,

Measure the centre bore of those replica wheels accurately. What's the specification on the VAC Motorsports item? 72.56mm on the outer side and 74.1mm on the face which sits on the E39 hub?

My guess is the replica wheels have a 74.1mm or larger centre bore.

Cheers, Dennis!
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Old 09-24-2013, 04:07 PM
Bearfan4life Bearfan4life is offline
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Location: Bakersfield
 
Join Date: Jul 2013
Posts: 32
Mein Auto: 97 540i
Have you looked into hub centric rings? They help center the rim on the hub.
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Old 10-07-2013, 07:50 AM
TANGO! TANGO! is offline
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Location: Middletown, CT
 
Join Date: Jul 2012
Posts: 33
Mein Auto: 1997 528i
Guys, thanks for the responses. I measured the wheels with my caliper, and it turned out that they were 74.1mm. I suppose the previous owner must have used some of those rings -if he did indeed have a 7 series as he said, and not an E39. My wheels are looking great now, especially since I installed coilovers and lowered it a bit, and the car runs great at highway speeds. Thanks again!
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