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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 > My winter tires



Wheels and Tires forum Sponsored by The Tire Rack
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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
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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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      09-30-2005, 09:56 AM   #23
petesamprs
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Quick question. i'm getting winter wheels/tires. Do I need BMW's specified jack/wrench to do the swap, or can I just use whatever I have lying around the garage?

In other words, is this set worth >$100? why?
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      09-30-2005, 11:30 AM   #24
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We bought an universal floorjack(~20). Only need to make "an adapter" inside the jack points to be able to use the universal jack. Some piece of wood or plastic/rubber is fine.

The original BMW jack(100+) isn't worth it, IMO.
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