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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 > Get wheel spacers?



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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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      05-06-2013, 10:32 AM   #1
wreaks610
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Get wheel spacers?

Hey guys. I got some new tires a few months ago (running 245/40r18 square on OEM 18" wheels), and now I'm finally upgrading the wheels. I wanted to do 8" front and 9.5" rear, but my tires won't fit the 9.5", so I'm going 8.5" all the way around. My question is: should I get some wheel spacers to make up for that inch in the rear that I was wanting to get? I know it won't be the same, but it will at least give me more of that aggressive look I was going for.

What do you think? Has anyone done this before? Car is an 07 e90 335xi.
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      05-06-2013, 01:17 PM   #2
VMRWheels
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What offset are the wheels?

I would recommend putting everything on, measuring your gap, and then getting the appropriate sized spacer.

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      05-06-2013, 01:27 PM   #3
MonacoBlueE90
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Quote:
Originally Posted by wreaks610 View Post
Hey guys. I got some new tires a few months ago (running 245/40r18 square on OEM 18" wheels), and now I'm finally upgrading the wheels. I wanted to do 8" front and 9.5" rear, but my tires won't fit the 9.5", so I'm going 8.5" all the way around. My question is: should I get some wheel spacers to make up for that inch in the rear that I was wanting to get? I know it won't be the same, but it will at least give me more of that aggressive look I was going for.

What do you think? Has anyone done this before? Car is an 07 e90 335xi.
Your 245/40/18 will fit just fine on 9.5 wheel. I have 235/40/18 on my 9.5 and it's not even that stretched.
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      05-09-2013, 11:11 AM   #4
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Quote:
Originally Posted by MonacoBlueE90 View Post
Your 245/40/18 will fit just fine on 9.5 wheel. I have 235/40/18 on my 9.5 and it's not even that stretched.
Discount Tire Co told me they wouldn't fit, so I trusted them. Oh well. I'll make the measurements and look into spacers, thanks guys.
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