Question about rims

I know that 18s look really good with our 6th gens but what about 17s would it look good? im asking cuz i found some rims on the SF craigslist and the only sell 17x7 and 18x8.5. the tires i was looking at have a big gap in price. i'm not looking for anything to crazy i just want tires so i can drive around on. my friend said i might beable to get away with running 225/40/18s on the 18x8.5 but damn the tires even for a crap brand is 88 bucks from kumhos with a treadwear of 400. If i get the 17x7 i can run 225/45/17s for 79 bucks with a treadwear of 340. i don't need to go all crazy, i'm just looking for something that can get me from point A to point B and have a long life. snice i'm getting something bigger then 16s i'm not tracking the car i just want it looking good. i forgot to say was i'll be running a +42 or +45 offset, i just need a heads up on which offset would be better with no rub.

17X7 would be fine, esp for SF roads.... ride quality is better, and tires would be cheaper as u stated...not sure abt the offset for a 17" rim tho

Tires are definetly expensive...I am gonna have to buy some new ones soon..got a quote few days ago..will cost me atleast $700...I still say go for 18's...17's just look so small to me...

I am having good luck with the 17" rims. Tires cost me $250 a set. I know my brothers accord looked good with the 18" wheels but his tires cost alot more and we got about the same number of complements on wheels.

which off set would i need to run on the 17x7 or the 18x8.5?? Just need to know.

+42, 45