I wouldn't expect much from the Zeros regarding tread life. I just traded in my 2016 Ecoboost for a 2016 GT PP. Dealer replaced the stock rear P-Zero's as they were below the wear bars before they gave it to me. Fronts are fine, plenty of tread, but the rears were gone. I'm sure they were driven hard, but I didn't see any signs of constant burnouts (no rubber particle spray under the fender wells). So i'm guessing they just wore out in 5k miles which doesn't surprise me. OE tires are usually not the greatest, they often choose an adequate tire that's the cheapest option for them knowing you will likely change them within a year or two anyway.Aww fud.