Hub Centric Rings?

[7thDimension]

So I want to mount my m-pars, but they shake the crap out of my car above about 45mph... I got them free with the car, they have new tires (unused, date code 2009) on them. The other wheels (the ones on the car) are don't have that problem...

So I'm assuming that I need hubrings? Are these good; http://www.ebay.com/itm/4pc...&vxp=mtr (http://www.ebay.com/itm/4pc-Aluminum-Hubrings-72-6mm-Car-Hub-to-74-1mm-Wheel-Bore-ID-72-56-OD-74-/330923183958?pt=Motors_Car_Truck_Parts_Accessories&hash=item4d0c8f0f56&vxp=mtr)? They are aluminum, which I'm assuming is better than the plastic ones?

[BOBS750il]

My mpars don't require hub centric rings. Are you sure they're oem?

[GSXRliterbikz]

They might be e39 mpars. If o, 74.1mm to 72.56 is what you need. Alum or plastic doesn't really matter. I've had both. The plastic actually last longer since they don't get stuck on to the hub as bad, and are easier to remove.

[Sobek]

I wound up using the rings that Ice recommended and had absolutely no issues with them - good fit, tapered ring etc etc. I would very happily recommend them as he does;

http://www.ebay.com/itm/251249819903

http://i.ebayimg.com/t/KIT-4-ALUMINUM-HUB-CENTRIC-RINGS-72-6-mm-TO-74-1-mm-/00/$(KGrHqUOKkEE2-GG8jrrBN21NFm4r!~~_12.JPG

I had the same issue as you. Pop a wheel off and measure the hub size if you like, that's all I did and quickly realised my style 95's had a larger diameter than I expected. Popped these rings on, good as new ever since.

[7thDimension]

I wound up using the rings that Ice recommended and had absolutely no issues with them - good fit, tapered ring etc etc. I would very happily recommend them as he does;

http://www.ebay.com/itm/251249819903

http://i.ebayimg.com/t/KIT-4-ALUMINUM-HUB-CENTRIC-RINGS-72-6-mm-TO-74-1-mm-/00/$(KGrHqUOKkEE2-GG8jrrBN21NFm4r!~~_12.JPG

I had the same issue as you. Pop a wheel off and measure the hub size if you like, that's all I did and quickly realised my style 95's had a larger diameter than I expected. Popped these rings on, good as new ever since.

Well I guess I'll get those then. How can I measure the hub size to make sure? A tape measure isn't accurate enough...

[Sobek]

There are those electronic measuring tools, can't remember what they're called. I just used a simple old tape measure and it was perfectly fine... was quite clear that mine was 74mm and not the 72.6 I thought.

[xboss]

use calipers to measure. Nice pairs can be pricey but are extremely accurate down to the 10,000 and 100,000th of an inch but even these ebay china calipers are very accurate and go for 13 dollars shipped.

http://www.ebay.com/itm/6-Inch-150mm-Stainless-Steel-Electronic-LCD-Digital-Vernier-Caliper-Micrometer-/360652137699?pt=LH_DefaultDomain_0&hash=item53f88ae4e3

[7thDimension]

use calipers to measure. Nice pairs can be pricey but are extremely accurate down to the 10,000 and 100,000th of an inch but even these ebay china calipers are very accurate and go for 13 dollars shipped.

http://www.ebay.com/itm/6-Inch-150mm-Stainless-Steel-Electronic-LCD-Digital-Vernier-Caliper-Micrometer-/360652137699?pt=LH_DefaultDomain_0&hash=item53f88ae4e3

I have a good digital caliper, but the depth rod extends too far to get a straight-on measurement... I'll check again tomorrow.

[IcemanBHE]

um...

Check the P/N on the wheel in a database and see if they are E39 or not.

Why waste money?

:D

ANd yes...Ill take the GOOD metal ones over crummy metal or plastic any day. Use anti-seize on them and they come off lickety split.

[ELIBEEMER]

or add 10mm hubcentric alluminum CNC machined spacers and longer lugs. (30mm stock, youll need 40mm lugs)
but stay away from cast type, or non hub-centric (flat spacers)

my ACS wheels shook like crazy, until I got the correct hubcentric spacers, now its as smooth as butter!!

I run 19" wheels and with a 10mm spacer my final offset is 5= No rubbing at full steering lock, lowered on Coil-overs.

10mm is thick enough to have the hubcentric lip in the center and in my opinion, fit the E38 perfectly!

[7thDimension]

Update...

Well, I'm guessing they're replicas, because this is what the back side looks like...

http://s24.postimg.org/quiiy1cvp/IMG_20130610_185245.jpg

They are also labeled FR, FL, RR, and RL, which I didn't notice before. So they might of been mixed up when I put them on, would that cause the shimmy and wobbling?

I tried to measure them, and they seem to be around 72mm?

[ECSTuning]

I usually prefer plastic hub rings like the ones found HERE (http://www.ecstuning.com/BMW-E38-740iL-M62_4.4L/Wheels/Hub_Centric_Rings/ES1928282/?salesrep=JRiggsbee&utm_source=bimmerforums&utm_medium=forum&utm_content=JRiggsbee&utm_campaign=postreply) over the metal ones. They're easier to remove as they don't seize to the hub over time.

- - - Updated - - -

I can't think of a reason not having them on the "correct" corner would cause wobbling. Are you sure the wheels are not bent?

[7thDimension]

I can't think of a reason not having them on the "correct" corner would cause wobbling. Are you sure the wheels are not bent?

Well, they're in good condition and hold air, so I don't think they're bent...

Maybe they're just not balanced correctly?

[DukeEllington]

hub rings, imbalance, control arms, wheel bearing. Wheel runout. Has to be one of these in this order

raise car, grab wheel at 12 and 6 and try to rock the tire, do the same at 3 and 9. If any movement its rings or controll arms. If you feel the wobble on the front and the back wheels; its rings. If it happens on just one wheel, its probably control arms

Now spin the wheel and listen for a squeal, if so thats the wheel bearing.

If everything spins fine and theres no wobble at 3,6,9 or 12, i would say its wheel runout

Hope this is useful

[IcemanBHE]

Well, I'm guessing they're replicas, because this is what the back side looks like...

I tried to measure them, and they seem to be around 72mm?

Most aftermarket cheaper wheels are 74.1 My experience...

[Slimm]

Is there a such thing as a reverse hub ring? Meaning, for example, a hub ring that will allow e38 mpars to fit on an e39?

[Sobek]

I'm not sure what the difference is between an E38 and E39, but if you're talking about putting a smaller hub wheel onto a car with a larger hub, you would need spacers for that as they can adapt the hub size...

[Slimm]

I'm not sure what the difference is between an E38 and E39, but if you're talking about putting a smaller hub wheel onto a car with a larger hub, you would need spacers for that as they can adapt the hub size...

I have spacers on there now; just regular, non hub centric 5mm spacers. I'm looking for alternatives b/c there's a slight vibration in the car and my wife hates it. I do to when i drive it (its her car). I plan on having them bored out to the proper bore. Custom made spacers are around $500. I can have them bored out for $150.

[GSXRliterbikz]

Or you bore out the smaller hub.

[7thDimension]

Is there a way to tell if I need rings by just holding the wheel up to the hub? Is there a noticeable gap?

I got them balanced today, I'll see what happens...

[GSXRliterbikz]

Is there a way to tell if I need rings by just holding the wheel up to the hub? Is there a noticeable gap?

I got them balanced today, I'll see what happens...

The wheel won't stay on the hub if its too big. It will want to fall off. And when holding it there, it will have noticeable play.

[7thDimension]

The wheel won't stay on the hub if its too big. It will want to fall off. And when holding it there, it will have noticeable play.

They are pretty snug on the hub, so I guess they're the right size, weird since they're aftermarket...

I got them balanced today, and it seems like the vibration is gone. As long as it doesn't shimmy on the highway, I guess I'm good.