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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 > Need advice on offset



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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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- 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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      04-07-2012, 03:45 PM   #1
Timpone6789
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Need advice on offset

Hey guys im getting some custom barrels and lips for a set of 3 piece rims and need to know a good offset to go with on a 09 E92 335i
Fronts are gunna be 18x8.5 with im thinking a et 18
rears are 18x10 with et20

Is there gunna be any rubbing with this?

Also i need the OD of the front brakes and caliper if anyone has it
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      04-08-2012, 01:06 AM   #2
MonacoBlueE90
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Here is a car with 8.5 et 20 front
http://www.e90post.com/forums/showpo...7&postcount=34
"Tyre sizes 225/35/19 front 255/30/19 rear and it still rubs on the rear" Said the owner.

Your rear would stick out 6mm more than that car 9.5 et20

Here is a 19x10 et 20 rear but fenders are rolled/pulled
http://www.e90post.com/forums/showpo...&postcount=460

Canīt say for sure will it rub or not, so many variables. But think for rear you need stretched tyres, rolled maybe pulled fenders depens on tyre size.Maybe even camber adjustments is needed.
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      04-08-2012, 10:23 AM   #3
Timpone6789
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thanks so if i go with a 18x10 et 28 in the rear would it be able to fit better
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      04-08-2012, 10:35 AM   #4
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Quote:
Originally Posted by Timpone6789 View Post
thanks so if i go with a 18x10 et 28 in the rear would it be able to fit better
Of course it will fit better, You would get 8mm more room to fender line.
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      04-08-2012, 10:56 AM   #5
Timpone6789
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Quote:
Originally Posted by MonacoBlueE90 View Post
Of course it will fit better, You would get 8mm more room to fender line.
what about the suspension side how far can i go in?
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      04-08-2012, 12:13 PM   #6
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Quote:
Originally Posted by Timpone6789 View Post
what about the suspension side how far can i go in?
Rear has plenty of room inside.No problem there.
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