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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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Old 08-25-2008, 06:44 PM
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angler angler is offline
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New rims

I have a E90 335xi which I bought with 17" rims. i want to use the 17" rims for my snow tires and buy a set of 18 inch rims. I am looking at the OEM 162 star spoke rims and wanted to know how important is it to have the 8 on the front and the 8.5 on the back. What is the purpose for doing this and does it matter? I am assuming I can use 18" all around? Also where is the best place to look for these rims at a good price. Thanks,
p.s. any other suggestions for other rim styles?

Last edited by angler; 08-25-2008 at 07:12 PM.
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  #2  
Old 08-25-2008, 07:03 PM
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767jetz 767jetz is offline
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Actually you've got your numbers a bit confused. They are all 18" in diameter. The difference is the width, which is 8" in front and 8.5 in the rear. I don't know for sure, but I believe the 8" or the 8.5" rims would fit at any corner.
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Old 08-25-2008, 07:12 PM
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angler angler is offline
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Quote:
Originally Posted by 767jetz View Post
Actually you've got your numbers a bit confused. They are all 18" in diameter. The difference is the width, which is 8" in front and 8.5 in the rear. I don't know for sure, but I believe the 8" or the 8.5" rims would fit at any corner.
thanks, i did mix it up. what does the difference in width do?
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Old 08-26-2008, 01:33 PM
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fun2drive fun2drive is offline
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Mein Auto: 335 vert//M3/4/ 13Outback
For snow tires you want the thinest width to get traction.

To find replacement rims check the wheels section here and also over at bimmerforums.com wheels section. I see 17" all the time there but be sure that a 17" will fit. I would stick with E9X 17" because I know those fit vs an e36 17" for example. It is not the bolt pattern that may be at issue but the inner diameter as E9X's have some pretty large rotors and calipers.

Now why does BMW does this.
Very simple, two reasons, wider rear then front, all things being even induces understeer. Also it is in vogue and looks cool according to most. I have 3 sets of wheels and rims on my M3 and 2 for my E93 and I have tow sets on the M3 with no stagger as it does induce a more neutral handling car.
Hope that helps.

Last edited by fun2drive; 08-26-2008 at 01:34 PM. Reason: omission
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Old 08-26-2008, 03:15 PM
Nikolas Nikolas is offline
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The thinnest width only applies to driving in fresh snow. For packed snow and ice wider is better.
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