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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 11-11-2012, 06:45 PM
ovsa ovsa is offline
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tire size for 325i

my 2006 325i comes with 255x45xr17 on the front and 255x40xr17 on the rear. I guess they are known as staggered. Question is can i run the 255x45xr17 on the rear? Will the extra height rub in the wheel well? Reason i am asking is because there are more options for winter tires in the 45 size as oppose to the 40 size. Not concerned about the "run flat" option either.

Thanks for your advice
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Old 11-11-2012, 07:09 PM
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pointandgo pointandgo is offline
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Quote:
Originally Posted by ovsa View Post
my 2006 325i comes with 255x45xr17 on the front and 255x40xr17 on the rear. I guess they are known as staggered. Question is can i run the 255x45xr17 on the rear? Will the extra height rub in the wheel well? Reason i am asking is because there are more options for winter tires in the 45 size as oppose to the 40 size. Not concerned about the "run flat" option either.

Thanks for your advice
I believe your front size is 225/45R17, not 255/45.
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Old 11-11-2012, 07:37 PM
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AzNMpower32 AzNMpower32 is offline
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I believe my mother's 325i (sport model) has P225/45R17s all around for her winter set (only the summer is staggered). That said, I wouldn't run P255/45 in the rear given the already very little clearance in the wheelwell.

Last edited by AzNMpower32; 11-11-2012 at 07:38 PM.
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Old 11-11-2012, 07:48 PM
aleks001 aleks001 is online now
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Quote:
Originally Posted by AzNMpower32 View Post
I believe my mother's 325i (sport model) has P225/45R17s all around for her winter set (only the summer is staggered). That said, I wouldn't run P255/45 in the rear given the already very little clearance in the wheelwell.
You can run 45's no problem on the rear. I have the non staggered setup 225/45/17 front and back and there is still plenty of room.
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Old 11-11-2012, 10:49 PM
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tturedraider tturedraider is offline
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Originally Posted by aleks001 View Post
You can run 45's no problem on the rear. I have the non staggered setup 225/45/17 front and back and there is still plenty of room.
Not saying they won't work, but 255/45s would have sidewalls that are 13.5mm taller than those of 225/45s. The 45 represents a percentage of the tire width. It is not a static value. 225/45 = a sidewall that measures 45% of 225mm, 101.25mm. 255/45 = 114.75mm.
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Last edited by tturedraider; 11-12-2012 at 08:41 AM.
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Old 11-12-2012, 07:40 AM
ovsa ovsa is offline
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tire size

sorry, my mistake.....currently the fronts one are 225/45/17 the rear are 255/40/17.

I want to use 255/45/17 snow tires on the rear,there are not alot of 40 snow tires out there. I am concerned about the wheel well clearance.

thanks again
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