well theres a limit before they start poking out of the arches, plus depending on if you plan on lowering the car or not will determine the best offset for you, the std ph2 wheels are the highest offset of all the sports so any wheel you choose from the renault range will be a visual improvement stance wise imo.
I would go any further out than around 37 myself especially if you plan on dropping the car - you can buy 35 turinis but to me they look a little too pushed out if you know what I mean