Pirelli 245/40 R20 99W The driver rear tire had blown out on me as I was merging onto a highway. I heard a heard a loud pop sound and the car shook and I had to swerve back into my lane. I looked around me and there were no objects or pot holes. My tire emptied down to 7 PSI in about 5-10 seconds. I immediately pulled over to the side of the road. I inspected my tire and there was no damage to the exterior of the tire (nails, screws, debris, etc.), as well there was no scraping of the tire or abrasion. When the repair tech took off the tire to replace it he noticed the steel belt had separated on the tire and had protruded from the inside out and caused the tire to blow. This was extremely scary and dangerous. If there would have been a car to my right my car would have crashed into another car. My car is brand new and I’ve had it for about 1 1/2 months. It is a 2025 Hyundai Ioniq 6 SEL that was manufactured in 2024. The car has it’s original tires from the manufacturer Hyundai. The tire is defective and was not safe to drive. I contacted Hyundai corporate and the dealership about this and they did nothing to reimburse me for the defective tire. I not only am still working for compensation for the tire that was $400 after taxes and fees, but I am trying to alert Hyundai about safety of this model tire.