It's called the Parada Spec-X and it's not a high performance tire. The sidewalls are ridiculousness soft, I know, I had a set on my Overland for a week and ripped them off because they were terrible. Absolutely numb steering response and it wandered all over the road under load. This is not a tire I would ever consider putting on MY SRT8.
Parada Spec-X Performance Truck Tires | Yokohama Tire Corp.
All that's available right now outside the Pirelli's and the Yokohama are General Grabber UHP and BFG g-Force T/A. Of all these the BFG is the highest performance. The General is another possible alternative but I've never run them on anything so it's a crap shoot.
In order of performance I'm fairly confident in this pecking order:
1. Pirelli P-Zero (OEM)
2. BFG g-force
3. Pirelli Scorpion (OEM)
4. General Grabber UHP
5. Yokohama Parada Spec-X
The last 2 may be a toss up.
I rally wish Continental would make the Extreme DW and DWS in our size.