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      02-28-2012, 10:37 PM   #1
NYZ4Jack
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Drives: 2005 Z4 3.0i
Join Date: Nov 2011
Location: New York, NY

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Factory 225/40/18 vs 235/40/18 tires? Thoughts?

I am looking for a particular tire model and they discontinued size 225/40/18 and only offer 235/40/18 in it.

Factory manual calls for 225/40/18 for the front tires.
The rear tires are 255/35/18.

Any see any issues, pros, cons, thoughts? Will they pretty much look the same as if I had 225/40/18 on the factory rims?

Here's what I got back when I ran a tire comparison calculator:
Diameter inches
25.4 (235/40) 25.09 (225/40)
Width inches
9.25 (235/40) 8.86 (225/40)
Circum. inches
79.8 (235/40) 78.81 (225/40)
Sidewall Height inches
3.7 (235/40) 3.54 (225/40)
Revolutions per mile
793.97 (235/40) 803.94 (225/40)

Any thoughts would be appreciated. Looking to pull the trigger in the next day or two.
Appreciate 0
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