It's good to see tires and wheels referenced as the starting point in selecting springs and shocks. In addition to slip angle, tires have a spring rate. 2 psi of air changes the way a 3600 pound NASCAR sedan handles. I run 17's with 40 series tires that have a stiff sidewall. I also have a lot softer springs than most. However, the car is very compliant and responsive and has minimal body roll with big bars.
You can tell the difference with your eyes closed (not recommended) whether it's a late model with low profile tires or an older car with 14"-15" wheels and stiff springs. As with all things subjective, it's a matter of preference.
I have learned the hard way ($) that, on the street, 17's do not work with anything over a 200# front spring. Shock valving requirements are also different. BMW now puts 18's on 3 series cars and econo-boxes come with 14's and 15's. A big wheel that is strong is also very expensive!
The nice thing about the Rota's is that they don't have 8 holes in them for two different lug patterns. A lot nicer look.
