Bought a used car they said they have it inspected...

Bought a used car they said they have it inspected before they sell a car for safety. Bunch of crap when I got the car I wanted to negotiate price first did that for 4 hours. Because I was not going to do high payments. After all that we went to drive the car I looked around it looked fine. Till the day after I noticed a chunk of the wall of the tire was gone. Went to ford to see if they will give me a new tire. They didn't of course even though want to help me even tho they never fixed the problem. Watch out for these guys they will seem nice at first but will sell you a car that is not safe instead accuse me of doing it even tho it was the previous owner. Never going to buy from a ford lot again.