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      05-23-2017, 08:23 PM   #1
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Bolt pattern on G30

I should have read up on this before but just found out the bolt pattern has changed. I was trying to test fit my rear M4 wheels/tires on the rear of my G30 540 and after removing everything discovered the difference.

Damn what a pain in the ass. Now it limits what wheels we can put on until the vendors get caught up with the bolt patterns and offsets.
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      05-24-2017, 01:57 AM   #2
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Quote:
Originally Posted by pkancel View Post
I should have read up on this before but just found out the bolt pattern has changed. I was trying to test fit my rear M4 wheels/tires on the rear of my G30 540 and after removing everything discovered the difference.

Damn what a pain in the ass. Now it limits what wheels we can put on until the vendors get caught up with the bolt patterns and offsets.
Sad but true.
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      05-31-2017, 03:57 PM   #3
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Quote:
Originally Posted by pkancel View Post
I should have read up on this before but just found out the bolt pattern has changed. I was trying to test fit my rear M4 wheels/tires on the rear of my G30 540 and after removing everything discovered the difference.

Damn what a pain in the ass. Now it limits what wheels we can put on until the vendors get caught up with the bolt patterns and offsets.
Annoying at the moment, but the 5x120 is a dying breed. The new pattern will open up a lot more options for BMW fitments going forward
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      06-16-2017, 04:51 PM   #4
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its 5x112 like the new 7 series now. which is what mercedes and audi have been using forever. im not sure what the center bore is on the bmw, but audi and mercedes uses 66.56/66.6, i was hoping to be able to reuse my 21" HRE on my next car, but that doesnt look like its happening now.
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      06-23-2017, 01:29 PM   #5
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Quote:
Originally Posted by drmlee View Post
its 5x112 like the new 7 series now. which is what mercedes and audi have been using forever. im not sure what the center bore is on the bmw, but audi and mercedes uses 66.56/66.6, i was hoping to be able to reuse my 21" HRE on my next car, but that doesnt look like its happening now.
66.56mm (+/- 0.03mm) is the CB.

Last edited by lemetier; 06-23-2017 at 02:24 PM..
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      06-23-2017, 02:22 PM   #6
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Quote:
Originally Posted by lemetier View Post
66.56mm (+/- 0.3mm) is the CB.
+/- 0.3mm? Seems like a lot, that be from 66.26 to 66.86. :
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      06-23-2017, 02:26 PM   #7
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Originally Posted by remmib View Post
+/- 0.3mm? Seems like a lot, that be from 66.26 to 66.86. :
Oops thanks for catching that. +/- 0.03mm is the required tolerance.
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      07-03-2017, 07:11 AM   #8
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Audi and Merc wheels are usually 66.6 to fit the 66.5 hub, Im sure that will work for the G30 as well
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      07-03-2017, 02:44 PM   #9
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Any info on ET?
Guess that depends on rim width right?
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      07-04-2017, 11:07 AM   #10
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Originally Posted by matbl View Post
Any info on ET?
Guess that depends on rim width right?
I'd say pretty much same as F10.
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      07-04-2017, 12:18 PM   #11
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Which is?
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      07-04-2017, 12:44 PM   #12
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Quote:
Originally Posted by matbl View Post
Which is?
You mean a flush fitment on aftermarket wheels? On 20" I'd say 20x9 ET25-30 is normal in the front, and 20x10.5 ET35-40 in the rear.
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