And if you have a pump thats already good enough to push to 120 then there shouldn't be any reason it needs to start at 80.
Just try doing it normally, top of the pressure without wasting the effort of partially deflating first.
If i
do it normally it feels like im pushing against a closed valve. And it doesnt seem to just be breaking the seal, i have to depressurize it to ~80 not just let a little burst out :S Either way im not too concerned about this, I just dont want my flats.
They're heavy, provide inferiour cushioning compared to pnematic tires, hard to install, they slow you down, people say they feel like you're riding on a nearly flat tire.
If they ride as slow as if I was on a flat then I wouldnt consider it but if its just a little slower, maybe.
The only unresolved question is armadillo tires vs tuffy tire liners.