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      07-19-2013, 11:49 AM   #8
The_Ring_Monster
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Drives: '07 Z4M
Join Date: Jun 2011
Location: SF Bay Area, California

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Quote:
Originally Posted by RobertRO View Post
You may also want to consider:
Front: 235/45/18
Rear: 265/40/18
This setup fits fine and, compared to the one you mentioned, it has two main advantages:
- the overall wheel diameter is closer to the original one, and actually improves speedometer precision;
- the sidewall is just a tad higher than original, which offers better rim protection.
Thanks for this! You mentioned that the thicker sidewall will improve speedometer precision, now I'm curious to find out how the 235/40 265/35 will affect speedometer readings. Any idea?
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