I need some technical expertise:

I have a 2006 A3 Sport (not the sline) and the car is not lowered.

I am planning to put original A8 19inch wheels on it.

Will this work? I assume both have 5/112 as far as I know. I believe the A8 rims are 8.5 wide and have a 45 offset (right?)?

If this fits, what kind of tires can I put on the wheels? I am thinking 225/35/19. Is this realistic?

Thanks a lot for your help!