OK, not a Prius - but it shouldn't matter. I am buying new tires for my 2014 Toyota Avalon Hybrid. Changing tires because of age, not mileage. The car has only 17,500 miles on the odometer. But I have noticed some cracking on the shoulders of the tires. I ordered a set of Bridgestone Ecopia EP422 tires. And given what I have read about Bridgestone having several different factories and not always having matching tread patterns. Also I needed to make sure that the tires are "fresh" because they will age-out before they wear out. So, after being notified that the tires had been delivered to Costco I hot-footed it down to the store ahead of my installation appointment to examine them. After an awkward conversation to justify my request I was allowed to examine the tires. Turns out they are all the same and were made in the 22 week of 2019. Now I can rest easy.