It's no secret. I'm an off-roading nooob - learning and what not. With that said, I'm still a little confused by something...

At last years Zu I was encouraged by several people to lift up gently on my parking break on tougher obstacles when I noticed my wheels slipping (screeching). It worked like a freakin' charm and helped me get up quite a few spots, but I don't quite understand WHY it worked.

Could somebody break this down for me and explain WHY it works, and exactly what applying parking break tension does for our 4x4?

-biju.