How to get compensated for defective tires on new Prius (all 4 have tread separation at 30k miles)?

I had one of those high speed blowouts a few years ago in a loaded Subaru Legacy wagon, tires were about five years old had about 45K miles on them, plenty of tread and the tire pressures had just been checked. The car handled well and everyone on the freeway slowed and let me cross over to the shoulder. I put on the donut spare, drove to the nearest Costco and bought four new tires. I figured if one blew out the others were not far behind.