I've been researching this too.
My guess is that the best offset is around the stock offsets of
et26 and et27. The back wheel seems to be the problematic one.
Some other numbers:
SSR Gt3 19x10, et24, Good
BBS LM 19x10, et25, Good
BBS CH 19x10, et20, rubs outside fender on lowered cars
BBS RG-R 19x10, et20, rolling advised
custom HREs 19x10, et27, Good
So it looks like a range of 6 to 7 millimeters will be the difference
in colliding or not, only about 1/4 inch. Larger offsets can be
adjusted with a spacer.
A smart guy like you probably figured all this out already.
My guess is that the best offset is around the stock offsets of
et26 and et27. The back wheel seems to be the problematic one.
Some other numbers:
SSR Gt3 19x10, et24, Good
BBS LM 19x10, et25, Good
BBS CH 19x10, et20, rubs outside fender on lowered cars
BBS RG-R 19x10, et20, rolling advised
custom HREs 19x10, et27, Good
So it looks like a range of 6 to 7 millimeters will be the difference
in colliding or not, only about 1/4 inch. Larger offsets can be
adjusted with a spacer.
A smart guy like you probably figured all this out already.