My Challenger is pretty basic,

1.06 FF t bars
Stock front sway bar
ESPO XHD leafs
KYBs at all 4 corner
Subframe connectors

Eventually I am adding some FF or Hotchkis sway bars.

I run 15 inch wheels and don't know that I will be changing them anytime soon(wheels and tires are expensive!)
I currently have 235/60 and 245/60r15s F/R on the car. BFG T/As of course.

What's going to happen handling wise if I put Nitto drag radials on the back? This is a road car. It's not an auto Xer, but I want it to handle well. I like driving it on old country roads. Not excessively fast necessarily, but I don't want to ruin my handling by throwing street slicks on the back and keeping the hard compound T/As up front.

Also, would siping the T/As help with traction?