I have 1.5" Armadillos on my tour'd up mtb. In a little over a year, they are the only tires that have flatted out of three different bikes til I got my new Sequoia. The All Conditions on the Sequoia flatted when I looked at them wrong. The Armadillos took hits from an urban mine-field. A 1-1/4" sheetrock screw, a bent nail, and two very respectable chunks of glass. The last chunk took several blocks to do it's evil. By then I was almost home. Haven't flatted an Armadillo since May. Can't complain.