There’s a noticeable difference. The rolling resistance is lower and it is more forgiving. The Duro Crux 27.5x3.25" tire has really good grip in all conditions including mud. I particularly noticed it when descending on an off-angle; improved resistance to slipping sideway. The profile is still good for cornering. It is 81 mm measured width. Most 3" tires are in the 71 to 76 mm measured width range. I did notice the extra volume was helpful in absorbing shock. It’s still a good climbing tire. On the other hand, the Knard is quite a bit lighter.
Kris