Well the Pros and there are Cons to 17" wheels and low profile tyres
Pros
-Cornering improves
-Handling improves
-Ride looks Bling
-Brakes have better cooling
Cons
-Harsher ride
-Steering feels jerky
-BRaking distance increase due to moment arm effect
-Tyres will form bubbles due to pot holes
-Suspension damage in the long run
-Turning radius increases if wider tyres are used
-Fuel economy suffers due to increased mass of the wheels
-Acceleration suffers
-Expensive to maintain due to there not being enough tyre to absorb potholes.
etc
I guess the cons are more then pros. 17' are better if the roads are smoother and used for bigger brake upgrade.
please feel free to add if I have missed out on something which I am sure I have.