There is more than just diameter at play here. Looks are subjective as you know, but as mentioned, you need the larger diameter wheel to run the bigger brakes and you need the bigger brakes to stop faster. The truth is, IMO, most people want the bigger brakes not for performance but because they like that look. It fills the space that the new style wheel shows. Some wheels just don't look right without the large rotor and brake caliper filling that void.
I run 20s on the Roush because that's what the car came with from Roush and I don't mind the ride or the look, if i did i would change them. I have had other tires on it "17s" and I prefer the way the 20s handle curves over a set of 17s. Does the Roush ride like my new SS, No but it is not because the SS has 19s and the Roush has 20s. It is because it is a different car. It is a Mustang not a Vet or a Cadillac so it is going to ride and handle like a Mustang.
Buy the car that you like and put the wheels on it that you like, because at the end of the day it is YOU that gets in it and it is YOU that YOU should be trying to please.
Will you get talked about with a set of 15s on a new model Mustang.....not at the drag strip.
I run 20s on the Roush because that's what the car came with from Roush and I don't mind the ride or the look, if i did i would change them. I have had other tires on it "17s" and I prefer the way the 20s handle curves over a set of 17s. Does the Roush ride like my new SS, No but it is not because the SS has 19s and the Roush has 20s. It is because it is a different car. It is a Mustang not a Vet or a Cadillac so it is going to ride and handle like a Mustang.
Buy the car that you like and put the wheels on it that you like, because at the end of the day it is YOU that gets in it and it is YOU that YOU should be trying to please.
Will you get talked about with a set of 15s on a new model Mustang.....not at the drag strip.