I recently got two new tires done in tubeless for my hard tale.
The front is a Specialized Ground Control
The rear is a Specialized The Captain Control.
The front tire is incredibly good (Ground Control), it's mind blowing good.
The rear tire (The Captain) is not so great.
I agree that in a straight line its good but turning is not great.
It also wails loudly on pavement, esp at speed.
The sound it makes alone is reason for me to dump it!
I did use a Specialized Hard Rocker (HR) on my rear and it didn't have as much traction but it was quiet and transitioned to corners very predictably (good).
The HR was easy to slide the rear when I wanted or hold tight and stay up.
The Captain feels like there is a spot during the the transition that has no grip and it's not easy to predict.
I have accidentally slid The Captain on my rear many times when I didn't expect or want to.
The Ground Control is a-whole-nuther-story, it's grippy as heck - on all terrains and works great below 30psi and corners like a dream and transitions smoothly and predictably with no drop in traction all the way over.
I will give it a few more rides but I am sure I will be putting the Specialized Ground control onto my rear tire to match the front.
May not easy to tell from the photos, but the "Ground Control" knobs are taller and very tightly spaced and there are 2x more of them compared to "The Captain".
The Specialized The Captain Control:
The Specialized Ground Control:
I just notice that the Ground Control has almsot the same tread pattern of the Hans Dampf!
Both highlighted in the "best tires" review here:http://www.bicycling.com/mountainbikeco ... hans-dampfhttp://www.bicycling.com/mountainbikeco ... nd-control