My dau had a similar situation and the worst part is she did not notice what happened. She had an LT4 Firehawk and I put bigger tires on the back for her. They gave better traction during strong launches and raised the rear of the car, giving her better forward visibility for a short person. One day she pulled into my drive with the rear down and front up after being at a dealer for some maintenance. It took too long for her to figure out what was wrong. I pointed out that she had something "different", but she could not figure out what without too many hints. What I find amazing is that so many people still feel there is a good reason to rotate tires. Many of the tire mfrs. have stopped recommending it. The ONLY good it does is allows you to justify buying four new tires at once instead of doing it the right way and getting two at a time, when they are truly needed. Front tires turn and wear round. Back tires do not and get better traction with the tread squared off to the road. When squared off rear tires go up front, they have extra resistance until worn round. The rounded off front tires do not do as well for traction on the rear as the squared off ones. I have had a lot of my relatives do the following on their FWD cars. FWD front tires wear out quickly. When that happens, I have them move the rear tires and wheels up front and put new, larger (one or two sizes bigger) tires on the front wheels which go to the rear. Eventually, I have them with 1 or 2 sizes bigger up front and 2 or 3 in back. For just a few extra dollars, handling and looks improve dramatically. Cars are req'd by the gov't to have extra room so that chains can be applied where needed. This always allows extra rubber to fit.
