Hi,
New guy here. I recently purchased a 1987 635Csi for my son and it came with BBS rims. I have a shimmy at higher speeds and realize I need hubcentric rings. I know the hub size for the car is 72.56mm, but don't know the hub size of the rim. Does anyone know? I don't have a micrometer to measure it.
Thanks!!!
BBS 16x71/2 hub size
Moderators: GRNSHRK, ron, bfons
BBS 16x71/2 hub size
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Likely the 74.2mm from the E39 as that's the only other major BMW hub size.
I didn't know they made a 7 1/2" width wheel for the E39 though...
I didn't know they made a 7 1/2" width wheel for the E39 though...
http://www.Drive4Corners.com
'79 635CSi Revival
'80 635CSi
'83 633CSi Callaway Turbo continued as 1988 535is Turbo
SOLD: '81 635CSi/A
'79 635CSi Revival
'80 635CSi
'83 633CSi Callaway Turbo continued as 1988 535is Turbo
SOLD: '81 635CSi/A
- hornhospital
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I guess this are E39 wheels. Yes I'm looking for the aluminum ring that goes behind the wheel and centers it on the hub. Just wasn't sure on the size. http://www.discounttiredirect.com/direc ... sWheels.do
Those aren't any sort of E39 wheel. However, lots of cars came with wheels, so those could be from a GM car with a 5x120.7mm bolt pattern and a larger hub bore.
Those aren't stock lug bolts, so someone at some point made a decision to change something. Just take all the lug bolts out, and see if you can slide the wheel around on the hub. If it's the right size, you'll feel absolutely no movement. If there's even a little play, chances are the wheel hub bore is too large.
There's also a 90% chance you need new upper control arms.
Those aren't stock lug bolts, so someone at some point made a decision to change something. Just take all the lug bolts out, and see if you can slide the wheel around on the hub. If it's the right size, you'll feel absolutely no movement. If there's even a little play, chances are the wheel hub bore is too large.
There's also a 90% chance you need new upper control arms.
Are you sure they aren't the E28 M5 wheels?
These are from mine... just with caps:
These are from mine... just with caps:
http://www.Drive4Corners.com
'79 635CSi Revival
'80 635CSi
'83 633CSi Callaway Turbo continued as 1988 535is Turbo
SOLD: '81 635CSi/A
'79 635CSi Revival
'80 635CSi
'83 633CSi Callaway Turbo continued as 1988 535is Turbo
SOLD: '81 635CSi/A
Found the problem
So it ended up being a combination of the tires and a bent rim. The car had been sitting for a long time. Replaced the tires and put the bent rim in the back for now. Didn't need the rings. Thanks for all your responses!