picked up a nail at 6000km on my GT, took two plugs to fill the hole (the nail was huge), so there was no way i was trusting it, not at the speeds we play at on the highways here, 3rd tire at about 4000km picked up what appeared to be a piece of someone's spoke, plug got me home, but it wouldn't seal correctly. hopefully i get more mileage out of the tire thats on it now. I kept the last tire and had it plugged and patched, just in case i need one on short notice, those tires are hard to get here