My setup:
BBS RG-R
18x7.5 +50 with SO-3 225/40
18x8.5 +53 with SO-3 255/35

Lowered about 1 1/2 finger gap in front and about 1 finger gap in rear (may have to raise the rear another 1/4 inch).
Right rear rubs on hard corning and big dips.
Fronts rubs on high speed big dips (I think it'll still rub even at stock height if the wheels are compressed enough, damn inner lining).

I'm not sure how anyone else with similar setups get away without rubbing.
I guess every wheel/tire/car is made differently. Some fit some don't.
Just expressing my experience.
Good luck!

 

[QUOTE]Originally posted by socal28
[B]..............

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I'm not sure how anyone else with similar setups get away without rubbing.

 

18x8 et+55 225/40 18"x10 et+67 275/35
lowered about 3-4"
is this setup ok?

 

rears are going to rub the fenders

Your gearing is going to be too tall too

 

what is the proper offset for 18"x10 with 275/35 for rear?

 

70mm should work good (or higher up to 74mm will still clear the inside too)