Mine are the HW type , very happy and am sure this set would be the ones lasting longer than any power type of rubber used so far.
Bear in mind two things , first this is the wider tyre for durability designed to support heavy loads. Second being such a wide one do not help in achieving very low lean angles. No matter how much I've tried never ever managed to erase the chicken stripes fm the rear one.
And a comment by a fellow rider on another K during last trip, "" my goodness that is the wider one , was wqtching all of you , another 4 K, and your tyre was so much griping on the tarmac".