Why the non-stock sizes?
I drove mine on them from Colorado Springs to Vegas for an SRT track day and they ride quality was perfect!Not on a RT, but this past weekend I did have my brother take the car down to the tire shop to have a set of Michelin Pilot Super Sports in a 265/35/20 & 285/35/20 installed on my SRT. After returning home from the Chiefs/Broncos game yesterday, I was pleasantly surprised at the aesthetics of the tire together with the ride quality & traction. The tire is hands down a great addition to any challenger. Go for it!
What ratio ?I ran Super Sports on my SXT for the summer, daily driven hard and AutoX'd many times. Purchased used w/ 3000km on them. Loved them and will use them on just about any car… a lot of people ran them on their cars from A porsche 911 T to a Pontiac G8. awesome tires.