Rogue puts on his flame resistant suit.....
Ok, I am tired of all the people out there saying things they don't know crap about.
I have 20s on my Cobra!
The ride quality has VERY little difference. The wheel tire combo can corner a little better, but again not much. You have less side wall flex on a 20.
The 20s are heavier and you can't always get them in different widths and offsets.
I have 20x9 with 275/30/20s on mine and I love them. I think the fit well and look good. I don't get laughed out of every show I go to. In fact I have always taken trophies at each show. Someone has to agree they look good on my Cobra! I have even had "non-car" people gather around my Cobra and tell me what a awesome car I have. Most important I have had women tell me how sexy it looks.
Now, if they would just say that a little more about me.
I drive my Cobra just as fast with the 20s as I did with 17s and have seen no loss in performance. I do however put the stock 17s to drag race with. That is the only time.
That is my opinion. Buy them if you like them.
Rogue steps down off his soap box.