Rear-Wheel Steering's Impact on Tire Wear

That's an interesting question.

If you move a wheel to the rear to even out wear, but the rear wheels steer ... what's the factory rear camber setting? Is it closer to 0?
 
I think like anything it depends on the system and what is was optimized for.
In general I would think tire wear is more even between front and rear, because A) you have rear tires turning, but also B) turning should be more effective with less wear on the front.
 
Any independent rear suspension will rotate the rear tires in yaw relative to the body structure as it compresses and extends. It's not a whole lot different than having a dedicated rear steering system.
 
Even if a vehicle has so much roll stiffness that it squats rather than rolls, the weight transfer to the outside will still amplify any toe changes on the outside wheel more than the inside.

we're talking fractions of a degree, not multiple degrees like 4 wheels steering and the rear wheel steering can go toe-out on the outside rear wheel, aswell as toe-in in the same corner.
 
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