Those look like style 331's. Front wheels are ET33 and the rears are ET44. Compared to what a factory E53 uses (style 132 uses front ET48 and rear ET45) for 19's it's not too far off. The problem is the E53 stockers are 9" wide up front and 10" out back so it makes comparing offsets apples to apples more difficult. I'm pretty sure you'd be fine, but you might want to get spacers and extended lugs from the rear just so the fronts didn't look like they stuck out further than the rears.

You'd have to do a test fit though to be 100% sure of how it would look/fit.

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