Tire Valve problems of the 2006 Toyota Sienna

Purchased 4 new cs5 grand touring tires that have 80,000 mile "wear out" warranty on January 26, 2016. Miles = 174295. In April 2018, 1 year 4 months later, miles now at 215089 (40k put on, so should have another 40k more) my vehicle would shake, not hold air, I even had problems with air going into through the valve, my vehicle failed an alignment check by an authorized Toyota dealership. Tire tread depth front driver: 4 6 5 5 tire tread depth front pass: 5 6 6 5 tire tread depth rear driver 6 8 8 7 tired tread depth read pass: 6 7 7 6 obviously not going to get another 40k miles out of these tires. In addition the wear on them is inconsistent on each tire. The tire isn't wearing right. Alignment right rear camber: -1. 9 -. 9. I had an alignment actually two, but one close to this appointment. Take my vehicle into wear I purchased them, the fine print comes into play. Sure the crappy tires, wearing out pourly, not holding air, won't make it 80k, but I pay half for two new tires plus labor, the other two tires do not qualify I'm just sol. Replacement tires to chose from, the exact same tire. So I get to pay for two new tires of the exact same brand and warranty. Update to follow as a "manufacturer defect" has been found in the two tires that were original.

Run flat tires needing replacement only after 2 years of owning the car. 2 blowouts on the freeway due to no direct tire pressure sensor to alert us of the flat tire. The light only goes on after the tire is blown. The first blow out, I drove it directly to the dealer. Total cost of replacement $350 for tire. I then had problems with the "indirect" tire sensor light coming on. I called the dealer back, he told me to ignore the light because the cold outside was causing it to go on. I drove it back anyway, they checked the tire pressure, put some more air in and sent me home with my sensor light still lit. I took it back to the dealer a few weeks later, they said it was a leaky valve. They replaced the valve, filled the tire with air and sent me home. Less than 5 days later, another blowout on the freeway. I drove it to the nearest tire store. They could not do the repair because the tire would ruin their machine. "it's harder to break down" and take off. I was sent to another tire store. They were able to remove the tire and replace them with regular tires. Now, I don't have run flats anymore, but I don't have the excessive cost to keep replacing these expensive tires. The dealer told me at the time of the purchase that it was a "dream" for mom's transporting kids because I wouldn't have to change to a spare if the tire went flat. That the care was safer than safe. The manager of the service department also told me I was lucky that I got 40,000 miles out of them. Both tires blew out on the freeway, I rolled the car in at 25 miles per hour, on the rim, with my kids in the car. I did it safely with my driving, not because of the run-flat tires. I will never purchase another car with run-flat tires. They didn't tell me how expensive they were to replace and that I would need to replace them so frequently. Also that the tire sensor is indirect. I didn't even know when the tires were just getting low, only when completely flat.