Ha! Ha! No, I used Slime in the tubes and grease in the bearings. (My bad for the awkward sentence construction.) Yeah, going through a patch of goatheads on a ride can literally 86 a tube. I've had tubes so full of holes they had to be replaced after a single ride. You can try to avoid 'em, but you can't miss 'em all. Lower pressure and heavier tires and tubes help, but that's not enough to avoid walking home. So far, the kevlar has worked well!