X3 Fitment Question

[Driver8]

Hi - I'm looking to upgrade the wheels and tires on my X3 from the OEM 18" non-staggered units to something bigger. Based on what I can find, the largest OEM X3 fitment is a staggered setup, Front 8.5x19/et51/235-45-19 and Rear 9.0x19R/et46/255-40-19.

My question is, can I go with an X5 fitment on my X3? Specifically, I'm interested in a non-staggered wheel in a 9.5x20/et45/255-40-20 F/R? I don't want something that will look hokey, i.e. I want everything under the fenderwells. I want a clean install and something that will look OEM, only better. I would like to have more whell face showing and a little more tire underneath as well, both in terms of height (+1.0" total height) and width (+20mm max).

Also, do the X5 and X3 share the same center bore (72.56mm) and bolt circle (5x120mm)?

Thanks in advance for your help!