Wheel Offset Discussion Thread... How far can we go?

[pfdaxe]

Offset Gurus:

The wheels I'm looking at are as followed:

19x9 + 20
19x10.5 +25

or

20x9 +20
20x10.5 +30

Here's my current set-up:

Front: 255/40-19 front with 20mm spacers, camber is -1.5
Rear: 285/35-19 with 25mm spacers, camber is -1.2
OEM 19" Sport Rays
Lowered on TEIN springs with SPC rear camber arms

I'm thinking about going wider tires on the new wheels: 265(255)/35-19 or 20 & 305(295)/30-19 or 20.

I like my current stance and would like to keep it as I'm not into the stretched tire look, so I would appreciate suggestions on spacer and tire size for my two wheel size/offset options.
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