Hi all

Disclaimer: This might been asked before, however I didn't manage to get my self a clear answer by using the search.

I just ( without doing proper research and just follow my BMW heart:-) ) got hold of set of style 63 19" rims (staggered 9 and 10) with 275/45/19 on all 4 wheels.
Which I understand is "good to go", even though they should be 255/50/19 and 285/45/19.

I want to replace the rear tires and just wanted to check my options with going wider on the rear while keeping the 275/45/19 in front (which are still good).

I assume that my best option to just get a new pair of 275/45/19 and keep them squared?

Or can I go wider on rears with out any drive issues? What is the max diff ratio between front and rear with staggered setup?

I assume that ie 295/40/19 on the rear wheels would be to much of different in ratio with the front (diff -1.6%)?

Thank you for any insights on this matter!!

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2002 BMW 3.0I E53 X5 Build date 2002-08-21