finally mounted up my mt43 with HD tube and did a small ride with a few mates yesterday... only about 35 miles... sierra fire roads and some great views... staged near cisco grove hit the top of signal peak, fordyce and lake sterling... very rock with lots of loose shale and granite... ran the tire with 12.5psi since it was my first ride with it and didn t want to pinch flat... i read of folks here on TT running low low pressure with tubeless... anyway, after just 35 miles the tire has began chunking... only fairly minor but still tearing of the leading edge of the center knobs... did i run the psi too high ?? i know this tire is the choice around here for woods riding and DS but is it out of place in nasty rocks ?? any thoughts appreciated.. bike is a plated xr400 cheers !!