Absolutely on the tires... And hoses and belts... Cars let sit for years rarely just pop back to life. The older a car the better in this world. And two modern mopar muscle cars in the show despite in one instance it being a clearly bad choice is suspect. Musta paid for the cgi those weeks.
Absolutely agree with this, especially about the old cars. When I deployed in 2002, I left my truck at my mom's house. I told my step dad to take it out and drive it to work about once a week just to allow the tires to roll over, belts to flex, and so the gas wouldn't just sit in the tank and turn to gunk.
However, I'll give TWD a pass on the dynamics of the cars just because I love the show and don't want to nitpick too much. I appreciate that they have no electricity and that was one of the first things to go. Once people stop working at the power plants, the power goes out. The History Channel did a show a few years ago called "Life after People." Really good show and I think they said the lights might stay out 2-4 weeks if people weren't around before the fuel would run out and the automated systems would shut down. Nuclear power would be a little different and might actually end with a nuclear meltdown because nobody was around to manage the cooling system for the fuel rods.