I have always been disappointed how the car looks from the back. The tires just don't seem very wide, and you run into issues widening the rims. I am looking at adding 1" to the stock rims but any more and you run into space issues. I think the BMW X5 looks kick ass from behind and like it is really planted on the road. I need to find out how wide those are. Something needs to be done about the current crappy look on the SRT.
Look really great! Once I trade in my 09 to get a 15 or 16 model year, I'll be getting NT05s in a 315/35/20 as well. It's a great street tire and it's as wide as you can really go in the rear of our challengers on a 10 inch wheel. 12.4 inches wide on the tires are pretty nice and plenty wide!
I just ordered these same wheels for my car yesterday. Haven't decided on tires yet though. Can't decide on the rear tire size. I like this look of the 315/35 a lot though. I'm torn between 315/35, 275/40, or 295/40.