GT-S fit?:19x9.5 +17 / 19x10.5 +18

Minicobra1

The rear would work, but not sure about the fronts, I think it would push the wheel too far out, and also negatively affect your steering.

My max recommendation on a 9.5 rim would be a +28, this effectively moves the wheel out toward the fender 25mm more then stock.

This wheel calculator may help you out:
Wheel Offset Calculator

Here are the stock 19 sport wheel settings:

19x9 +47
19x10 +30

I run 20mm spacers with my stock set up. Hope that helps.

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