Backing out on a car deal

And I’m going to agree with Bladecutter. Buying cars solo is not for you. Or your husband. You both got taken to the cleaners, and then they did it to you again when you bought the Altima. Swapping tires on you after you’ve agreed to the sale should have been your cue to walk, but you didn’t. Neither of you should buy a car again without taking along a friend who’s knowledgeable and won’t let the dealership pants you like this one did (twice).