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      09-17-2008, 09:58 PM   #1
Save Bluth
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Drives: non-Beemer (for now)
Join Date: Sep 2008
Location: Austin, TX

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XI tire size - room for error?

I'm a new owner of an XI coupe. Browsing this forum, I seem to recall a discussion about staying dead on the overall wheel/tire size for the XI. I am generally aware that a car (speedo) is calibrated to the wheel/tire size. But, is there a reason that the XI would be more sensitive to this?

Here's why I ask: I have the stock 17's and am looking to go to 18's. I'm not a huge fan of super thin/low profile rubber. I've seen pictures of cars that have a different look - a more "bulbous" tire, if that makes sense. Obviously, I'm not talking about SUV size - hopefully someone will know what I'm talking about. I'll try to find a picture a post a link.

It just seems like I'd have to go to a larger overall diameter to get the look I want with an 18. Thoughts? Thanks.
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'13 335i M-Sport l Glacier Silver l Black l AlumHex l 8AT
retired: '08 335 xi l Silver/Black/Gray Pop l KW v3 l 6AT
retired: '01 Z3 2.5i l Silver l Black l 5MT
retired: '94 325is l Black l Black l 5MT
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