Tire rotation, can wheels be rotated side to side?

[Bradster]

While most Boxster high performance tires are unidirectional, Bridgestone has a tire (Potenza RE760 Sport) that can be rotated side to side. On a 97 base with 16 inch wheels, can the entire wheel/tire be rotated from side to side, or would the tires need to be dismounted first? In other words, on my old corvette, the wheels were unidirectional as were the tires.

Thanks.