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@TotalShanner
I run rimpact Pro on the rear on all my bikes.
I've cracked two rear carbon rims both times with rimpact installed. To be fair one of them was likely due to seeing how low I could go with pressure and grip. At 95kg 18psi was obvs a bit too low.
Second time running 23psi and was possibly just bad luck with a rock strike at the very edge of the rim, it sliced straight through the edge of the insert. There's also the chance the tyre burped some air beforehand with out me realising.
I've since stayed at 23psi with no more broken rims.
They are just bits of foam rather than something with magical properties. I think some folk can think it's going to protect from every and any impact - it won't.
But I definitely do feel a tangible difference in grip, there's a psychological benefit that I think makes me faster.
I'm slightly jealous of riders who seem to be able to run significantly below 20psi, guessing those rider are a fair bit lighter.