I had those mutano's on a hardtail. I could not find a psi where I didn't either lose my teeth rattling over even the smoothest roads, or lose grip or traction on the tamest trails. Just didn't work for me.
I want to do that to a Weirwolf. have done similar things to half a Nano already, with a narrow beltgrinder.
My idea for next such project is to have a big file and set a rider in a trainer to drive the rear wheel and such get good rubber smoking capacity without the noisy and messy powertool that will just snap belts all the time.
Would you explain the snipe and file procedure a bit further please? Others now tires that work well when filed down?
I took the top half off a Bontrager XR front (less off side knbs), and that pretty much killed all performance, although it did roll faster, as a decent dry weather rear. The XR tread isn't so preferable for this job, which is?