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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > All-Wheel-Drive (Xi / xDrive) Talk > XI Staggered Tire Calculation Tables



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      10-25-2014, 01:19 PM   #1
rosica
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XI Staggered Tire Calculation Tables

After so many posts asking “will this staggered tire combo work”, I decided to make the following charts to help out.

Any difference above the generally accepted 1% is crossed out on the chart.

The factory staggered setups are marked in BLUE.

From my personal experience I like the factory 18” staggered setup vs my 235/275 19” setup. Why? 17” looks too small on a e90 and 19” offers so little sidewall bent wheels are inevitable.

Enjoy!!

PS: The tire data was takes from S-04 and Pilot SS, there could be variably among brands and models
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Last edited by rosica; 11-06-2014 at 08:55 PM.
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      10-25-2014, 08:03 PM   #2
BklynTico506
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This is great info. Much better than guessing when using the tire calculator.
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      10-26-2014, 04:15 PM   #3
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thanks!! this is awesome!
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      10-26-2014, 04:21 PM   #4
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This needs to be a sticky
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      10-27-2014, 07:47 PM   #5
gtaccord
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Can you make it to show positives and negatives? The front tire diameter should be larger than the rear and then within 1%. Smaller does not work.
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      10-28-2014, 08:51 AM   #6
mashimarho
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THIS is nice.
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      10-28-2014, 08:53 AM   #7
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Mods need to sticky this..
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      10-28-2014, 06:22 PM   #8
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Quote:
Originally Posted by gtaccord
Can you make it to show positives and negatives? The front tire diameter should be larger than the rear and then within 1%. Smaller does not work.
I can and in negatives in a few days. I haven't heard before that the front needs to be bigger, what is the reason?
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      10-29-2014, 09:49 AM   #9
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this is awesome makes it sooooo much easier!! thanks! sticky please
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      11-05-2014, 08:54 PM   #10
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Quote:
Originally Posted by gtaccord View Post
Can you make it to show positives and negatives? The front tire diameter should be larger than the rear and then within 1%. Smaller does not work.
Negatives added, I am still not convinced it matters.
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      11-06-2014, 06:51 PM   #11
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my first set of winter tires (some continental variety), i tried staggered at :
Front: 225/45R17
Rear: 255/40R17

I would get the traction control light at speeds over 50 mph, so it may be manufacturer dependant (check tire specs). So I switched them out and used a square setup. Problem solved.
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      11-06-2014, 07:08 PM   #12
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shouldn't a tires rolling diameter be a more accurate way to measure?
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      11-06-2014, 08:53 PM   #13
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Quote:
Originally Posted by ucdbiendog View Post
my first set of winter tires (some continental variety), i tried staggered at :
Front: 225/45R17
Rear: 255/40R17

I would get the traction control light at speeds over 50 mph, so it may be manufacturer dependant (check tire specs). So I switched them out and used a square setup. Problem solved.
That setup should work, but there is variability among brands.

Quote:
Originally Posted by madbim View Post
shouldn't a tires rolling diameter be a more accurate way to measure?
I used diameter. There also is circumference and revolutions/mile. I have those too, the results are basically the same.
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      11-06-2014, 10:54 PM   #14
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Quote:
Originally Posted by rosica View Post
Negatives added, I am still not convinced it matters.
It does. Thanks.
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      11-09-2014, 03:34 PM   #15
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Thanks for this! I too vote it to be a sticky.
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