Wheel and tire sizing for BMW e60
 

Greetings. I am currently looking at a set of Curva C300's for my e60. The sizes I'm looking at are 20x8.5 +30 offset in the front, and 20x9.5 +30 offset in the rear.
Will these sizes be a good fit? And also, what would be some good tire sizes for these wheels? Any suggestions will be much appreciated.

Thanks!