Gearscout: You and Leftiebiker are right about the OEM tires being poor. I, too, purchased Ecopia Plus (at around 23k miles???, still plenty of tread left, but one was trashed in an accident), currently have 32k on the car, and the the Ecopia Plus replacements seem to be a much better tire, when properly inflated to 40-42psi.
I would add that the dealership is correct about the torque of the motor. It's easy to scrub/peel out without any drama sitting behind the wheel. I think the casual driver/owner isn't even aware of the wear going on! (I walk regularly on a road with several consecutive stop signs...amazing how MOST drivers use full throttle/full braking from stop sign to stop sign...ugh!!!)
2018 Toyota Prius Two (son's car)
2014 Toyota Avalon Hybrid Limited