Just to go back to your original question - one thing to bear in mind is that 17"s with low profile tyres are much easier to damage on kerbs and potholes compared to say, 15"s on standard tyres. Worth remembering when parking and driving around town.
I was reminded of this yesterday as I tried to get out of the way of a rather impatient oncoming bus - had to scrape the kerb to avoid gaining a bus-shaped scratch down my off-side
The 17"s do look much better though
