How about 18x8.5's with 225/40 tires? Will 40 or 45 offset be better? By better I mean a little more flush with fender and no rubbing with an 1" drop.
Dunston and Warlord (before he upgraded to a speed3) had 18x8.5 with 225/40. Same Tenzo wheels, just different offsets, finishes, and tire brands. I think Conti CSC2 for Warlord and Federal SS595 for Dunston if I remember correctly.
The 225/40 on the 18x8.5 has a very slight stretch to it (some would laugh at that being called "stretch") and is very subtle and clean looking.
Dunston and Warlord were both lowered 1.75" and Dunston had no rubbing with 48 offset. No rolled fenders btw.
On the other hand, Warlord had 42 offset so his stuck out a 1/4" more and he ended up trimming the lip on his rear fender to clear instead of rollling it.
Since you plan to only go down an inch and it won't be slammed, clearance and offset might not be as big of a difference.
However, when you end up with a lot of stuff or people and it get's FORCED lower, then you might have rubbing issues.
One other thing (at least in my opinion) is that overly aggressive fitted wheels on a more stock ride height looks goofy as HELL! Wheels can have poke/flushness on a slammed car and it looks great. Wheels that poke and you can still fit your whole hand in between tire and fender look like a damn 4x4 jacked up high with the wheels sticking out Jeep buggy style :stuart:
If you're only going down an inch, either the 40 or the 45 "should" fit. But the 40 is guaranteed to rub when you load it up. With the 42 offset, the fenders had to be rolled/trimmed. Dunston's 48 offset doesn't rub on the stock fenders and whatnot so 45 offset and being .75" higher than him, you should be fine.