BMW M Wheels Question?

So I just bought some BMW M Parallels originally from a 2001 740iL to fit on a 1999 BMW 540i Sport. The tire size is 235/50/zr18 front and 255/45/zr18 back,will these fit on my car? And I heard that the hub size from the e39 is larger than the e38? Do I need to change tires to different sizes to fit my car?Do I need to bore out the hub size to fit my e39,if so where can I get it bored out and how much would it be? Please help thanks! :)