I usually rotate my non-directional radials front to back, same side. However, last time I rotated the drive wheels straight back, and the non-drive wheels across front to back. Since this was on a front wheel drive car, RF went to RR. LF went to LR. RR went to LF. LR went to RF. I saw it on a tire website. No difference noted in the last 3k miles or so. Ed Fisher Dallas, Tx