[MKS427]

NT01 or Toyo R888 (Factory Five's recommendation). Both 100 tread compound. The NT01s are no good in the rain, but they stick really well. I had NT555s for about the first 1600 miles, but the 300 tread compound wasn't enough. The R888s are almost as good as the NT01s dry conditions, but work well in the rain. BTW, they are sister companies.
Air pressure is critical too, 22 psi cold, per FFR. It made a huge difference.
I am running NT01 255/40/17 on 9" wheels front and 315/35/17 on 10.5" rear. For some reason, Discount can get the Nittos in a couple of days, but not the Toyos. Just make sure to coach them on the knock offs, or imitation knock offs. Bring never seize, knock off tools and/or tie wire with.

Good luck,