Thats a nice wheel! :thumbs:
but if you look at it the price difference between a 8 and a 9 is very small, same goes for the tires.
It really all depends on the look you like. My BBS LM's that are run are 8's up front but i have to run a 15mm spacer to clear the dampers so. IMO it would be better to just get a 9 w/ no spacer or smaller spacer basied on what the offset is.
But like i said for a road car both would be fine, it just comes down to looks.
cant' really get anything aggressive in a 8' , but 9's give u a few more options.
Find the look u like then get the size u need to achieve that look.
I was going to go 9.5 up front, but didn't need it. I could fit the same size tire, (255/40/17) with more clearance, a little lighter and a few dollars less... 9.0 was it.. =)
You may have the same case w/ the 8's if you find the right wheel.
good luck!