I was at 17-18 , I actually just got the tires 285/75/17 a week ago I used to have c rated but I blew 2 tires out on previous trails, I think the 200 is too heavy for C rated, this time I got the insurance at American tire so anything happens I get a free tire, but instead of it blowing out the tire the bead just popped, I was actually going to try 15 psi but I needed more clearance, this Trail has 5 rock gardens on it. It’s one of the knarlest trail in big bear arguably the worse, it’s this one and John Bull, my buddies don’t suggest me tot try John Bull till I get lockers.