What size of wheels and do you have the fender flares?

My wheels are 275/40/20 and 315/35/20, and I got 15mm for the front and 25mm for the rear, which I think is the best combo for this set up. I'm glad I didn't get the 30mm otherwise they would have push the wheels out too far for my taste.

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Here's the Photo Album of my (sold) X3; Album of my (newish) X5 is on the way!
(WARNING: read this before you buy anything from Umnitza)