will these wheels fit my car? & what tire size without rubbing?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=220545321340&ssPageName=STRK:MEWAX:IT
I am wondering what y'all think about the rear wheel width & what tire size I can run in the rear without rubbing. they are staggered 17x9" & 17x10.5" the backspacing specs are in the ad if needed. also my car is lowered apprx 1.5"....
thanks in advance for any help & ideas.

ok Thanks. quads are gone & so are the tailpipes. I'm putting Lt's & custom side exit exhaust on it now so sounds like no problems. I was thinking the wider rim/tire might rub the outside fender well. I guess I could roll the edges if it was a problem.. I just don't want to sink 1k+ into rims/tires & then have the rears not fit right. I might not go as wide as the 315/35's but I'll see. I the staggered setup with the polished lip looks sick! the car is a weekend street car & never sees the track so I am running the stock control arms in the rear for a better ride. I'm wanting a wider tire back there to help a little with traction but don't want to go too wide as to run into a hydroplaning problem with the FL summer rains. I am currently running 255/55/18's all around & have great wet traction, I don't want to loose it.
thanks for your input.

Thanks guys for all of the info/feedback! I will probably go for the new wheels & tires in a month or two. I've got 18" bullet's from O.E. wheels on it now & the tires a nearly done in + I am ready for a new look. Thanks again!