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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 11-03-2013, 06:23 AM
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Kdoherty Kdoherty is offline
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Can I run OEM staggered wheels on a 325xi?

Hey all,

I'm looking into picking up some style 162's for my 325xi because my current wheels have brand new snow tires on them and I don't feel like changing them over because i'm not fond of them anyways.

So I took to the internetz and found some 162's and then realized they come staggered. I learned, while working as a technician for Subaru that different sized tires on an AWD system will make quick work of smoking the center diff/ t-case, or so I thought.

I know that the all wheel drive system on the E90 is essentially just a glorified 4x4 type of system with open diffs front and rear with a non selectable range t-case right off of the transmission. Since there's really no viscous coupler or center diff in the BMW, this would make running staggered wheels okay, right? In any case as long as the sidewall heights were the same there'd be no difference in rotational speed and the system would be unaffected.

If anyone knows for sure, or is running staggered wheels on an xi/x-drive with input i'd love to hear it.
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Drop the clutch, proceed and ain't care.
  • '06 325xi 6MT

Last edited by Kdoherty; 11-03-2013 at 06:24 AM.
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  #2  
Old 11-03-2013, 06:43 AM
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GarySL GarySL is offline
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Mein Auto: '08 335xi (E90)
162s were a factory option for my car & been running fine for 52k.
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Old 11-03-2013, 06:58 AM
fdriller9 fdriller9 is offline
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Rolling diameter of the front and rear wheels needs to be within 1% of each other.
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Old 11-03-2013, 09:02 AM
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Kdoherty Kdoherty is offline
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Quote:
Originally Posted by GarySL View Post
162s were a factory option for my car & been running fine for 52k.
Quote:
Originally Posted by fdriller9 View Post
Rolling diameter of the front and rear wheels needs to be within 1% of each other.
Excellent, thank you both

keeping the diameter should be as simple as having the same aspect ratios front and rear and i can always just go to the owners manual and find the stock tire size.
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Originally Posted by cj.surr View Post
Drop the clutch, proceed and ain't care.
  • '06 325xi 6MT
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Old 11-03-2013, 10:59 AM
Norm37 Norm37 is offline
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Quote:
Originally Posted by Kdoherty View Post
keeping the diameter should be as simple as having the same aspect ratios front and rear and i can always just go to the owners manual and find the stock tire size.
The aspect ratio will be different front and rear on a set of staggered tires.

Tire Calculator.

http://www.discounttire.com/dtcs/infoTireMath.dos

The owners manual is your best bet.
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  #6  
Old 11-03-2013, 11:20 AM
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Kdoherty Kdoherty is offline
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Location: The cradle of Liberty
 
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Mein Auto: A redhead E90
Quote:
Originally Posted by Norm37 View Post
The aspect ratio will be different front and rear on a set of staggered tires.

Tire Calculator.

http://www.discounttire.com/dtcs/infoTireMath.dos

The owners manual is your best bet.
yeah the owners manual says that the 325/330xi can run 225/40/18 front and 255/35/18 rear. That's probably the way i'm going to go.
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Quote:
Originally Posted by cj.surr View Post
Drop the clutch, proceed and ain't care.
  • '06 325xi 6MT
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