If I were a cynic I might think that it's a scheme to sell more of those bespoke Pirellis, since you'd not want new fronts with somewhat worn rears...
But reading the manual's description of "unsymmetric" tyres, I suspect that unlike a conventional asymmetric tyre (with a desired direction of rotation), these P Zero HNs have a distinct "inside" versus "outside" instead, so they can rotate in either direction, but there's something distinct about the construction, pattern, or composition which is design to have the tyre 'face outwards'.
Indeed, having just looked, the outside of the tyre is marked "Outside" - presumably the inside also has an "Inside" label.
I can't see why you couldn't also swap front to rear every six or twelve months depending on mileage.
both rotation schemes above involve switching L-R sides of the car. which is of course needed to equalize camber wear.
*not advised with directional tires, unless they remount to flip tires.
*not advised to flip tires, if tires are assymetric (most high perf tires are)
front to back ... i dont get the point. it maintains equal wear for 4 tires... but id rather just have the worn down pair replaced with new ones. as long as your mileage is the same the wear rate is the same. it does not affect sales after the first wear cycle.
why does hyundai recommend different rotation schemes ? maybe the perf vs non-perf car have different alignment settings ??
anyway, i would make decision based on actual tire (limited by symmetry, directionality) and observed wear pattern
Even if you don't do it during normal rotation, it's good practice to put the partly worn rears on the front and the new tyres on the rear when replacing. As numerous people have found out over the years, fresh fronts and worn rears are a recipe for trouble at the first wet roundabout...