<prompt> Human: I had a flat and the rest of my tires are really low on tread so I may as well replace them all. My question is, is it a wiser investment to buy new tires when I can afford it or are the savings worth buying all used? I will add that the source I am going to is a highly trusted local store. The AAA employee who changed my tire and another auto store employee suggested this place.  <response>: Tires drastically change the way your car handles, and can save your life or cause a wreck.What if you save 500 on tires, and then one blows out and you total your car? 