tire diameter ?

[pdabbs911]

What is the largest tire diameter possible that would fit on a 2002 X5. I have 18" OEM rims and would like to put 285/60/18 on it. This would increase the the overall diameter from 29 to 31.5 inches. Is this possible without running into rubbing issues? Thanks for the help. I tried to search but most threads are related to rim dia. versus tire dia.

Thanks again,

[motordavid]

I saved a pic & post done by "Lambeau" from a few years ago:
http://www.xoutpost.com/393688-post1.html

It shows his big/tall tire winter set up; the size he used is very, very close
diameter-wise, to your intended set up. I don't guarantee it, but the specs
are damn close, nominally, though tire brands/sizing can vary considerably
from brand to brand.

Here's an easy link to check up on my arithmetic, which I used to give you
a ballpark:
Tire size calculator

Using the two tire sizes shows that Lambeau's snow tire set-up is actually a
tad bigger in circum than your potential size usage, though brands really have some
differences in real world actual 'dimensions', but you may be in the right zip code.
GL, mD

[pdabbs911]

Thank you motordavid. Both links where extremely helpful. I really appreciate it.