I changed mine before I had a chance to ride them in the snow. But my "gut feel" would have been to leave the pressure about the same for the snow. I think the sidewalls are plenty flexible even at 8 psi to still yield good traction in the snow. If you get a bit too much slip, you can always let a bit out and see if it helps.

 

great will try your advice...question...in the mountains do you use the 4 lock much and if so what type of terrain...i appreciate your comments...

 

I have only used the locker a couple of times. Both in deep mud. I have not yet found a spot crawling rocks or in dry dirt where it slipped enough to need to lock it in. It has great traction even without the locker. Maybe I'll end up locking it more this winter plowing snow.