Normal
Don't have any tires right now that are siped, but basically in the center knobs, I usually go with 2 sipes horizontally, and one vertically, on the shoulder and side knobs I just do 1 h and 1 v, like a + sign. As far as pressure, I generally run between 9 - 14 psi On rear tire and maybe 11- 16 on the front, the lower side when muddy and wet, higher side on harder stuff.