My car (98′ ford contour se) has 205/60/15 tires on it now but i cant find any good used tires in the size. One of the shops i went to said they can put on 205/70/15’s and they would be fine. Is that true or are they just trying to make a sale? Also the front tires and the back tires would be different because they didn’t have any sets of 4.