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Discussion Starter #1 (Edited)
Hello,

I recently purchased a 1985 M635CSI that I will be shipping overseas. As Metric tires are non-existant where I will be using this car, I would like to know which later model 16" BMW/OEM wheel would fit on my M635CSI.

Do 7 series 16"wheels from the mid-late 1990s fit on the M635CSI? Or is there any other 16" OEM wheel thatwould fit without spacers or any other type of modification? Any assistance would greatly be appreciated.

Thank you,
AM
 

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E32 or E38 7-series cross spoke 16-inch alloys are a common upgrade for E24 635CSi owners.
Same hub bore diameter and stud pattern, just very slightly different offsets.

However one of the best upgrades for the M635CSi or M6 (in my opinion) is the 'Style 5' cross spoke 17-inch wheel.
They look superb, handle great - see picture - and are relatively easy to find in the marketplace.
 

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Discussion Starter #3 (Edited)
BMWWGN,

Thank you for the quick post amd advise. I have already looked at several 16 inch (ET 23) Cross spoke E38 wheels on EBay and some of the compatibility charts say they do not work on M6/635. That is why I am in doubt.

Regarding the 17 inch style 5 wheels, I also agree that they look great and will definitely look into these. Question: what do you think of the 16 inch Style 5 wheel utilized on the E28 M5? Any opinions?

Best regards,

AM
 

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From what I've heard and read on other forums, the E38 wheel (ET23) is marginal for the E24 and only works without a spacer if you use a narrower tyre (205/215).
So if you want wider tyres you'll need a 5mm - 10mm spacer, which is fine provided you use longer wheel bolts.
Also be aware that the front hub configuration of the E24 is pretty much limited to an 8-inch rim width, while the rears will accept wider rims.

The 16-inch wheels from the E28 M5 will fit, but I personally do not think these are very flattering to the E24 coupe.

If I had an M635CSi, there would be no question: I would go with the 17-inch 'Style 5' upgrade, and my 2nd choice would be Alpina rims, like those on the red car in the preceding picture.
I would definitely not go bigger than 17-inch on an E24.

On a non-M version of the E24, the 16-inch cross spoke from the 7-series is a good choice, IMHO.
 

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Discussion Starter #5 (Edited)
BMWWGN,

Once again, thank you for your feedback. The information you posted has been EXTREMELY helpful and instructional. Summarizing it all, I understood that you would recommend in the following order of priority:

1. 17" Style 5 wheel
2. Alpina wheels
3. Sytle 5 wheel from 1990s 7 series (as long as I utilize tires that are less than 215 wide).
4. In last place, the 16" Wheels from the E28 M5

In terms of wheels, I have found a lot of used 7 series Style wheels (16") on the US Ebay and new E28 M5 wheels on several BMW parts sites.

Question: I tried finding the 17" Style 5 wheel on the US Ebay site and could not find any. Are these dificult to source? Did they equip a later model bMW or can they still be purchased new? Any guidance would be welcome.

Finally. Regarding the Alpina wheels, what model and size would you recommend?


Thank you and best regards,
AM
 

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If you're patient you'll find a set of the 'Style 5' 17-inch rims.
I think they are still available new as well.

If no luck, try looking for a set of the Alpina's.

Let us know what you end up with.
Cheers
 

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My M635csi currently has 17" Racing Dynamics wheels but I prefer 16s on the e24 so I just picked up a set of 16 x 8 E38 style 5s. They bolt right up with 225/50/16 tires, no spacers required. It will look something like this (not my car);

 

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Discussion Starter #8
BMWWGN & GregCt,

Thank you for the information and recommendations. You guys have no idea how helpful your posts have been. Will definitely keep you all posted regarded the final outcome.

Best regards,

Slfan
 

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It all comes down to personal preference, but Greg's picture has reaffirmed my belief that the 7-series 16-inch rims are a little too understated for the M-powered coupe.
I've seen them on the 635CSi and they look fine, but on the M-car I think even the original metric wheels look better than these - see the grey M635CSi in the first picture.
The 17-inch style 5 is a tasteful 'evolution' of the original metric rim, in visual terms - they fill the arches beautifully.

Just my two cents worth.
 

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Discussion Starter #10 (Edited)
BMWWGN,

Despite being a fanatic in terms originality, I have to agree with you that the 17" wheels fill the wheelarches better and make the car look more aggressive (while still maintaining an OEM look). At the end of the day, I think the final decision will depend strictly on me being able to successfully source a set of 5 new (or near mint wheels) of either style. Question: do you have any idea if the 17" wheel and tire fits in the spare tire compartment?

Best regards,
AM
 

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Discussion Starter #11
BMWWGN,

One last question: would you by any chance know the part number for the 17" Style 5 wheel? Or which model utilized this wheel so that I can try to figure out the part number? Sorry for the hassle.

Best regards,
Slfan
 

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Style 5 17 inch with 15mm spacers and a set of Pilot sports, with these after much trial and error buy a set of Hubcentric spacers from Turner which will give you the correct hub bore of 72.6 to 74mm,this is better than hub centric rings.
 

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Discussion Starter #13
Feld1128,

Thank you for the picture. The car and wheels look great. Also thanks for the specifications regarding the Spacers.

Regards,
 

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The 17" style 5s shown above are most likely off of the e39 5 series cars. There were alot of different wheels designs available throughout the years that chassis was sold. Style 5s, 42s and 32s are my personal favorites, but wheel design is a personal choice so that's up to you. One thing to keep in mind, as I believe was referenced before is that any wheels for the e39 chassis have a different (larger) bore diameter and require the use of hub centric rings (or special spacers). This isn't a big deal and works well. Just want to make sure you are aware of it. If you search for e39 (or 528, 530 or 540) 17" wheels, you should find plenty of selection. Good luck and keep us posted.

BTW, I am envious of your garage list. Please post pictures.

Eric
 
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