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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Help with new wheel fitment



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Wheel offset calculator courtesy of BimmerPost.com. You may use this calculator to calculate what tire sizes you might need if you upgrade your tires, or what wheel sizes/offsets are compatible with your car.
    Current Wheel Width  inches             Current Wheel Offset  mm.
         New Wheel Width  inches                  New Wheel Offset  mm.
 
TIRE WIDTH
/
ASPECT RATIO
- WHEEL DIAMETER
ORIGINAL TIRES
/
NEW TIRES
/
Based on your stock wheel setup, your new wheel will have:
Original Tires Diameter (in.)
      New Tires Diameter (in.)
  Difference in diameter (in.)
           Percent Difference %
                     
Speedo @60mph will read: mph
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      01-08-2010, 12:56 PM   #1
schwieri
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Drives: 2007 e91 328i
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Help with new wheel fitment

I recently purchased a 2007 328i sports wagon, alpine white, and I am interested in upgrading to staggered 18" or 19" wheels. Can anyone help guide me in the right direction as far as sizing and fitment. What is the best offset to fit the wheel well? Or the max size before rubbing? Run flats or no -(I currently have runflats)? Without runflats -is there room for a spare?

Any help would greatly be appreciated. Thanks and have an awesome day!!

Jordan
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      01-08-2010, 01:29 PM   #2
OEMconcept
 
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19's will look way better than 18's IMHO... you can go with the same sizes and offsets as an E90. front 19x8 or 19x8.5 and rear 19x9 or 19x9.5 (there are wider options, but these are the conservative and most popular sizes). suggested offsets: front et30-35, rear et30-40 (again, higher and lower offsets are options, but these are the "safe", conservative, and popular offsets that will not give you any rubbing)

there are many different styles in wheels. are you looking for OEM looking wheels or aftermarket wheels?

many members swap out their runflats due to the harsh ride they provide. I would recommend going non-rft. you can always ride with a spare in your trunk, or you can purchase one of those space saving tire repair kits.

hope this helps!

feel free to ask any other questions
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