what size tyres

[heronliam]

Hi I have just purchased some 17" alloys both 7.5 j. For a Slk 200 2002.
Anybody have any idea the best tyre combo for these.

 

[BTB 500]

Look here:

Mercedes-Benz Fitting Chart and Wheel Fitment Guide | Alloy Wheels Direct

Scroll down to SLK Class (R170) - looks like 225/45.