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      12-03-2013, 11:44 PM   #1
se4y
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z4 e85 tire Retrofitting(for advice)

The part number of my z4 rim is 36116758191(8JX17 ET:47). The original tire is 225/45/17.My question is may I change the rear tire to 235/45/17 or 245/40/17 with the same rim? Which choice is the best if it is possible? Thanks
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      01-25-2014, 04:39 PM   #2
mikeo
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Yes you can. Keep in mind changing size changes speedometer readings and is one of the reasons I usually move up at least one size in the rear in order to make speed readings more accurate. You could consider rear sizes from 235/45-17 up to 255/40-17 on the stock wheels.
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      01-26-2014, 03:47 AM   #3
se4y
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Thank you.I changed 235/45-17 Michelin. not RSC. It is soft and very comfortable.The damper sound was gone. City road need soft than racing track IMO
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