Q: How does something just a year old get so rusty?
A: I assume because it has never been painted.
Q: It has car tires on it. And they are probably over 6 yrs old
A: I agree the tires are in bad shape. He offered 2 replacement tires.
Q: Trailer tires are made for a reason.
A: I'm not aware that trailer tires function better. I thought they were cheaper made than car/truck tires due to loading the side wall less. Could you give more detail?