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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 > what are the CONS of having a different offset wheels?



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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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      07-18-2005, 12:28 AM   #1
z1ppo325i
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what are the CONS of having a different offset wheels?

i went to amigo town (next to Shea Stadium) where they sell rims and tires.. I went to this one shop with a guy's face all bruned up and he told me if I put on offset 20's when the car is made for offset 35 it will destroy the car... but i put the 18x8 et 20 with 235/40Z18 tires and everything seems fine.. rear is perfect fit in my opinion although front looks tad sticking out.. ill post pics later.. but ayone familiar with offset and there effects?
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      07-18-2005, 03:16 AM   #2
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I don't know about the rear, but the front wheel offset needs to be exactly what the manufacturer recomends. The steering geometry will be affected, which will in turn affect the vehicle's wheel bearings, tie-rods, and other steering related equiment.
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