20" Wheel Question...

[sneek]

I posted this in the general X5 forum, but thought this might be a better place to post...

Looking for a little insight from you all. I have an 05 X5 3.0 with the stock rims/wheels- 17", I believe. I hate 'em! I am looking at possibly upgrading to 20" wheels...the star spoke 87's. My question is two fold...

If I put these on my X5, which does not have the sport package, are there specific tire sizes you would recommend? I am assuming that the sport package lowers the ride a little, so I don't want to but too low a profile tire on the car, and have it look "funny".

Secondly, I'm a bit budget constrained, and have been looking at replica wheels. Transwheel Corporation has a set of the 87's that are exact specs of the OEM ones, but obviously cost much less. Anyone have recommendatoins, opinions, or general feedback on going this route?

Cheers-