I run cushcore xc in the rear wheels of my xc and enduro bikes. On my ebike, I run cushcore xc in front, and cushcore pro in back. I do not use it to substantially lower pressures... I generally run maybe 1-2 psi less (depending on conditions) then I otherwise would without cushcore... For me, the benefits are additional sidewall support (ultimately allowing me to run less pressure at not have tire/casing squirm) and vibration/chatter deadening. For me, when I do get rim strikes... cushcore is not enough to save me from slamming the rim into a rock and blowing it up. I have blown up carbon wheels before, while running cushcore. IMO, it is not a solution for allowing significantly lower pressures.