Funny that you never tried Cushcore, because I think you just wrote a salespitch for them. Rim protection, sidewall support, and not shrinking or losing function over time are the main selling points of Cushcore over other tire inserts. I used to run DH tires without inserts on my trail bike, but was still folding tires and denting rims. I tried Huck Norris and it worked for a while but I experienced all the same drawbacks you described. Now I’m running DH tires and Cushcore in the rear and I’m happy as a clam. It weighs a little more, but...