general problems of the 2007 Toyota Highlander

I bought four goodyear assurance triple tred tires on Jan. 29, 2013. After about a year I started having problems with maintaining air pressure in the tires. I took the vehicle back to where I bought the tires and they would do maintenance such as remounting or replacing valve stems. I still would have air pressure issues. On Dec. 9, 2016 while driving on the highway I noticed a thumping noise. It got progressively louder and made the vehicle sway. I pulled to the emergency berm and saw that I had a flat tire. I took the tire back to conrad's tire express & total care which where I bought the tires from. The service technician put air in the tire and said that there were broken belts in the side wall. He laid the blame to a road hazard problem and laid the blame of losing air to defective Toyota rims, even though with the original tires on the vehicle I never experienced a problem of losing air from the tires. My opinion is that the tires must be defective since they can not maintain air pressure. This is a real concern since the possibility of someone being injured or killed because of a tire blow out.

When going around curves at varying speeds, traction control light comes on and wheels shake. Happens once or twice a week. Happens when roads completely dry. Seems like a flaw and I'm worried of catastrophic failure while driving.

2007 Highlander wheels are rusting so bad that 2 of 4 tires are losing air pressure. This 2007 was purchased new from Toyota. We had previously purchased a 2002 Highlander with the exact same issue. I search online and see other people have had same issue with Toyota wheels. Wheels should not rust this bad in this short a period of time and mileage. Luckily we had no safety issue because I monitor our vehicles closely. Low tire pressure could definitely cause a safety concern for people who do not monitor their cars as closely as I do. I feel Toyota has a quality and a safety issue with these wheels.