When I got an oil change at my car dealership, I was told that my car needed new tires. I've had them since I got the car 40,000 miles ago. They said that they were "in the red", which I took as meaning they needed to be changed immediately. Well, when I got the car home, I looked at the tires and they all looked fine to me. My front driver's side tire seemed worn more than the others, though. I guess that's because of 99% of the time, it's just me in the car. Just by looking at the pictures, would you say they'd need to be changed? I could understand replacing my front driver's side tire, because that one looks pretty worn, but I see no justification in replacing all of them just because one is worn a lot. The first picture is my front passenger's side tire (All the tires basically look like this except for the front driver's side tire), and the second picture is my front driver's side tire. Thanks.