I would have never even thought about until reading posts here, I'll change them out sooner or later. I have a bad habit of changing tires and wheels more frequently than i do trucks.The difference between C and E rated handling and fuel economy is so minuscule that is laughable people even see that as a consideration point. If anything, the price between them should be the main deciding factor. I'll rather have a tough and long lasting tire for 30 bucks extra on each tire. If stability is a concern, then just find a negative offset wheel. I handle better now on -6 offset with 34s than I did with +44 offset on 32s.