Stagger Wheels / Tire Rotation?

[simoncpw]

Hi all,

I currently have the following stagger rims and tires set up:
- Front = 235/50ZR18
- Rear = 255/45ZR18

Since the front and rear are not the same sizes, they cannot be rotated between the front and back

And since the tires are "Directional" tires (don't think it matters which side wall of the tires is the outer / inner side), I have to detach the tires from the rims, then swap the tires only (FL with FR; RL with RL).

Given the above set up and the X-Drive's variable torque on each wheel at times, is it still worth doing the rotation? The tires have done about 13k KM so far.

Thanks