For those so inclined to upgrade to high performance tires, I just installed the Continental UHP's. They stack up very well in the performance tests with the Pirelli Scorpions, and the Michelin Diamaris but are significantly less expensive. I used 295/45/20 in the rear and 255/50/19 in front. My truck has been lowered 1+" and2" and the tires really fill the fenders perfectly with no rubbing issues. These tires are Y and W rated and were originally designed for heavy fast high performance SUV class vehicles like the Porshe Cayanne, and the Mercedes etc. The fronts are ratred at 2149# and ther rears at 2601, tread wear is 420. Ther rear also come in a 295/40.
I had the KDW-2 on before which was a great performance tire, but they got very noisy as they wore, and the only choice for the front was a 245/40 which looked a little bit weanie in my opinion.
Anyways, I just thought I would share this info as yet another choice for us. So far I reeally love them. Other than the fact that I am the sole owner of Continental Tires USA,

I have no financial interest by making the above reccomendation.