There are a couple of things I notice comparing a 163 x2.6 to a 163 x3 AXY and we had my 163 x 2.4, 2015 there too.
Both the AXYS's trenched more than the old Pro and would get stuck nose way up in the air more than the old Pro. The deeper lug the track, the worse the trenching.
When digging the sleds out we noticed tons of snow was being carried through the tunnels and being deposited as a wet slush in front of the track. This froze rapidly and made an obstacle for the sled to climb over. The old M8 Cats were bad for this.
When climbing or moving at a decent speed, the AXYS sleds would outclimb the old Pro as long as you could maintain control.
Comparing the 2.6 to the 3.0: both sleds felt more different from the gearing than the track.
I'm sure in heavy deep snow the 3" may work better but in the light stuff I felt it was just too stiff.
Both the AXYS's trenched more than the old Pro and would get stuck nose way up in the air more than the old Pro. The deeper lug the track, the worse the trenching.
When digging the sleds out we noticed tons of snow was being carried through the tunnels and being deposited as a wet slush in front of the track. This froze rapidly and made an obstacle for the sled to climb over. The old M8 Cats were bad for this.
When climbing or moving at a decent speed, the AXYS sleds would outclimb the old Pro as long as you could maintain control.
Comparing the 2.6 to the 3.0: both sleds felt more different from the gearing than the track.
I'm sure in heavy deep snow the 3" may work better but in the light stuff I felt it was just too stiff.