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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 > Tire Sizes for 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
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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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      05-13-2008, 12:41 PM   #1
dsomc6
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Tire Sizes for Wheels

Hi Guys,

Currently I am running a a common M6 Wheel and Tire combo on my 335i Coupe. It's got the normal 235 and 265 rubber in the back, I can get my hands on some Bridgestones that are 245 40R19 and 275 35R19 and think they would be better sport rubber than the Toyo's I am currently running. Any idea on whether they will fit. I am not running an aggressive offset on the rear - just the recommended one by Mod Bargains.

Wheels are 19x8.5 et 30 in the front and 19x9.5 et 38 in the rear.

Let me know your thoughts on handling and rubbing issues.
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      05-13-2008, 12:51 PM   #2
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it won't rub at all.

I've got an e93 (really low on the back) and I've got et35s on the rear with some 275 rubbers, and they don't rub!!!
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      05-13-2008, 01:41 PM   #3
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245/40/19 and 275/35/19 are too tall. I'd get 245/35/19 and 275/30/19.
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      05-13-2008, 01:43 PM   #4
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Only time I'd be a little concerned with running 245s up front on a coupe would be with the ET30 offset or more.

Right now with the 8.5" ET30 front wheels I'm really really close on the inner fender and the outside edge of the tires...
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      05-13-2008, 05:01 PM   #5
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Quote:
Originally Posted by sambonator View Post
245/40/19 and 275/35/19 are too tall. I'd get 245/35/19 and 275/30/19.
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      05-14-2008, 08:22 AM   #6
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Quote:
Originally Posted by sambonator View Post
245/40/19 and 275/35/19 are too tall. I'd get 245/35/19 and 275/30/19.
Exactly.
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      05-14-2008, 11:56 AM   #7
fast_lap28
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how is the offset ET30 matched on a 18 x 8.5 wheel?


Future setup:

F - 18 x 8.5 Et30 + 235/40/18
R - 18 x 9.0 Et35 + 265/35/18

will be tracking and autox with these.
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