After waiting for a long time, debating should I or shouldn't I, finally it was time to give in. Here are 20" X6 wheels (style 259) on my 08 X5. I bought these from a member here and put on the new tires, Toyo Proxies ST II. The rears were professionally bored out to fit X5 by the previous owner, so I just needed to bolt these on. The ride is so much better than the stock 18" run flats, I am wondering why I didn't do this sooner.
Enjoying them so far. Not sure how much they will affect my gas mileage, but hoping for the best