I say that some tires can tolerate it, but think for a moment.... If you rotate and the tires actually DO wear evenly, then in a while you have 4 tires to replace all at the same time. That's a marketing ploy - one to which I didn't comply even though the suppliers wanted me to post a 5-point or 4-point tire rotation poster for my clients to see. It generates a lot of business - and a lot of busy work - for a fee for the shops at the same time. IF you have a certified reason to move a tire from one position to another, I suggest that you start with new tires at the rear and as the previous set of front tires wear out, then ONE TIME - move the good rears to the front and put the new pair on the rear. For a singular reason, I say that and we can discuss it later if you wanna.