[Virgin1]

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You should not have to worry about tire size because when you go from 16's to 17's you reduce that aspect ratio, or sidewall height. e.g. 205/55-16 =205/50-17".
Its called plus one sizing. By keeping the overall diameter of the new tires as similar as possible to OE, nothing will need to be adjusted.

However, you should be aware that the factory offset of the wheels is +52.5mm. Stay between +45 and +50 and you should be OK, as long as you don't go wild on width.
I went the plus-zero method. The 225/45-17's I am running now are so close to the diameter/circumference of the OE 205/50's I don't even worry about it.

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