Largest tire on factory 17" rims?
 

:imnew:

Hi all, I'm a new member with my first post, and of course its a question - what is the biggest size tire I can go with on my factory 17 x 7.5 rims? My X5 is a 2006 3.0i, and I would like to go with a wider all-season tire than the current 235/65/17 Michelins.

Also, what effect can larger tires have on my X5, both long and short term?

Thanks in advance for your help.

you could buy new rims and go much wider. on those wheels you couldn't do any more than 245

It would that larger (wide) tires cause more drag, which reduces mpg?