I got a reply from somebody at South SF. The Super Sport wheels are slight wider to support the bigger tires in the back. After purchase, on your own, you can put four 275s on the regular Sport wheels if desired.
Not sure anyone will know until they try as neither sales or service knew. The new Gen2 Quad offers Super Sport wheels with custom designed Michelin tires staggered 275/305. Does anybody know if its possible to put those tires on the new Bronze Sport 22" wheels? I doubt the Super Sport wheels...