E90Post
 


MINHS Auto Care Center
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Canada > Wheel offset questions



Reply
 
Thread Tools Search this Thread
      08-15-2011, 09:18 AM   #1
dpw198
Private
 
Drives: 2011 335i xDrive
Join Date: Mar 2011
Location: Toronto

Posts: 91
iTrader: (0)

Wheel offset questions

Hello,

I do not understand how to determine the correct wheel offset when choosing winter wheels for my 335xi with m-sport package.

My OEM set up is:
F - 225/40/18, 18x8 wheel, 34mm offset
R 235/40/18, 18x8.5 wheel, 37mm offset

Now, if I go down to a 17 wheel , what would be the minimum and maximum offset required if I am going to run 225/45/17 on all four corners?

The Tirerack configurator pulls up 17x7.5 wheels with offsets that are +32mm, 34mm and 35mm and 17x8/17x8.5 wheels with offsets of +40mm.

Am I ok if I stick with any of the Tirerack wheel sizes and offset combos?

I have also read that OEM wheels off a non-xDrive may not fit the XDrive models. Any truth to this?

Can anyone offer any advice or anything else I should watch out for?

Thanks
__________________
2011 335i xDrive Sedan, M-sport pkg, LeMans Blue, Black leather, Auto w/paddle shifters, PDC, Individual Sound system, Convenience Access, Alarm
Traded in: 2002 BMW 325i Sedan
2010 Audi Q5 Premium
dpw198 is offline   Canada
0
Reply With Quote
      08-15-2011, 10:49 AM   #2
bunnn
Colonel
 
bunnn's Avatar
 
Drives: like a grandma
Join Date: May 2009
Location: Toronto

Posts: 2,256
iTrader: (12)

Quote:
Originally Posted by dpw198 View Post
Hello,

I do not understand how to determine the correct wheel offset when choosing winter wheels for my 335xi with m-sport package.

My OEM set up is:
F - 225/40/18, 18x8 wheel, 34mm offset
R – 235/40/18, 18x8.5 wheel, 37mm offset

Now, if I go down to a 17” wheel , what would be the minimum and maximum offset required if I am going to run 225/45/17 on all four corners?

Offsets can stay the same as your original set up. Offsets do not change with the diameter/width of a wheel. Although it can play a role in how your tires fit(only if you go with extreme fitments, not applicable in this case). It's just how close to the fender your wheels will be.


The Tirerack configurator pulls up 17x7.5 wheels with offsets that are +32mm, 34mm and 35mm and 17x8/17x8.5 wheels with offsets of +40mm.

Am I ok if I stick with any of the Tirerack wheel sizes and offset combos?

Tirerack suggested sizes should be fine. Please keep in mind, often OEM configuration are very conservative and you could add quite a bit more to have a more "flushed" look, if you prefer.

I have also read that OEM wheels off a non-xDrive may not fit the XDrive models. Any truth to this?

To a certain extent. This is because non-Xdrive cars often run a staggered set up(rear wider than fronts). This is supposed to mess with the xdrive system. HOWEVER, with a proper tire set up this is possible.

Can anyone offer any advice or anything else I should watch out for?

Thanks
Replies in bold.
__________________
Cheers
Ben
bunnn is offline  
0
Reply With Quote
      08-15-2011, 03:43 PM   #3
Dr. G
Brigadier General
 
Dr. G's Avatar
 
Drives: Black e92 335i
Join Date: Apr 2010
Location: Brampton, Ontario

Posts: 4,946
iTrader: (32)

Garage List
e92 BMW 335i  [4.35]
If you get a 7.5" wheel, you want the option with the lowest offset... in your example it would be the 32 although I'm not sure how much you will like the look of it.

Try and find an 8" wheel with something in the 25-30 offset range, I've seen a couple on tirerack.
__________________
JB4 / OSS Angel Eyes / Downpipes / F1-Racewerks FMIC / Custom Meth Kit / BMS DCI / ER Chargepipe / HKS BOV / BMS Meth Elbow / BMW Performance Exhaust / Carbon Fiber Inlay Quad Tips / 19" Miro 111 / Front Aero Lip / M3 Sides / VRS CSL Trunk / Mtech Rear / DD CF Quad Finned Diffuser / LCI Tails / BBK / Smoked Reflectors / F1 Euphoria LED Interior / License LED's / GT 5000k Corners / 5000k HID Fogs / Air Scoops / LED Turn Signals / FK Silverline Coilovers / HPA endlinks / Vibrant Resonators / Osram CBI 5000k D1S
Dr. G is offline  
0
Reply With Quote
      08-15-2011, 05:34 PM   #4
dpw198
Private
 
Drives: 2011 335i xDrive
Join Date: Mar 2011
Location: Toronto

Posts: 91
iTrader: (0)

Thanks for the feedback but I'm a little confused.

If I go with a 7.5 wheel, would I not want it to be a higher offset like a 40 as opposed to a 32? Similarly on an 8 wheel, would I not want a higher offset?

I thought with a narrower wheel, I would want a higher positive offset so it would "push" the rim outward, closer to the fender to balance the look.

Did I get the concept in reverse?
__________________
2011 335i xDrive Sedan, M-sport pkg, LeMans Blue, Black leather, Auto w/paddle shifters, PDC, Individual Sound system, Convenience Access, Alarm
Traded in: 2002 BMW 325i Sedan
2010 Audi Q5 Premium
dpw198 is offline   Canada
0
Reply With Quote
      08-16-2011, 10:48 AM   #5
dpw198
Private
 
Drives: 2011 335i xDrive
Join Date: Mar 2011
Location: Toronto

Posts: 91
iTrader: (0)

Dr. G,

Now I understand what you said in your post.

I found the following which was really helpful to do the wheel size / offset conversions.

http://www.1010tires.com/wheeloffsetcalculator.asp
__________________
2011 335i xDrive Sedan, M-sport pkg, LeMans Blue, Black leather, Auto w/paddle shifters, PDC, Individual Sound system, Convenience Access, Alarm
Traded in: 2002 BMW 325i Sedan
2010 Audi Q5 Premium
dpw198 is offline   Canada
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 03:42 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST