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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 much performance lost?



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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
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ASPECT RATIO
- WHEEL DIAMETER
ORIGINAL TIRES
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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 %
                     
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      09-22-2008, 10:31 PM   #1
silvertank04
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how much performance lost?

Im thinking of going from 159 style stock set up to 189 style wheel tire set up, or possibly 161 style setup becouse of weight issues. What im looking for is having a wider tire in the back than the stock 225. The main problem is the weight gain. I read somewhere that for each rotationg lb its like adding 5-6 lbs to curb weight of the car. Some one please explain. By adding about 10-12 lbs all aroud will I loose allot of performance or it will be insignificant. Help
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