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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 > How different will my e90 drive if I go from 16' wheels to 18'.



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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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      10-07-2012, 08:45 PM   #1
iPaki
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How different will my e90 drive if I go from 16' wheels to 18'.

Hey guys I own a 07' BMW 328i and was wondering what are some things to consider when going from 16' wheels to 18' wheels. The wheels Im looking at are 2 lbs more then my 156 style wheels that came with my 3 series. I don't know crap about cars, so I'm just wondering how will the drive change if it will?
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      10-07-2012, 10:57 PM   #2
mapleridge
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It all depends on the quality of the wheels. Here are some possibilities:

  • Decrease in MPG
  • Turning is not as crisp
  • Wobble at high speeds (if not balanced properly)
  • More prone to cracking (depends on manufacture process)
  • Car feels heavier in turns


Not sure what wheels you went with but if you are willing to spend a little there are some inexpensive options out there that will help you shed a few lbs in weight per wheel and look good, while still upgrading the size.
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      10-08-2012, 11:20 AM   #3
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Generally speaking increases in diameter and a lower profile tire will result in better handling and faster steering response, improved cornering grip and road feel but a stiffer ride.

Tires http://www.tirerack.com/a.jsp?a=AH8&...ires/index.jsp
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      10-08-2012, 11:20 AM   #4
Gary@TireRack
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Generally speaking increases in diameter and a lower profile tire will result in better handling and faster steering response, improved cornering grip and road feel but a stiffer ride.

Tires http://www.tirerack.com/a.jsp?a=AH8&...ires/index.jsp
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