I currently have a Performance MS with 21" silver wheels. The car is now over a year old and I still love it. But I really want the following tire/wheel setup: Front 245/35R21 Rear 285/30R21 with Michelin PS2 tires. I really don't like the look of the 245's from behind when the Model S is hunkered down at freeway speeds. They look lame. And, I don't see retrofitting the Performance Plus package as worth it, especially since you still only go up by 20mm in width for the rears at the cost of almost $10k. Besides, I am happy with the suspension right now and don't need additional stiffness for my sedan. That said, 21" wheels are not all that prevalent and I am having a hard time finding a set that offers 21x8.5" for the front and 21x10" for the rear. Does anyone know where I might find that combination? Also, should I be looking for 35mm or 40mm offset for that rear size? I would really love to get feedback from someone more knowledgeable than I am on this subject. And I don't want 22" rims. If I can't find a workable solution for less than ridiculous cost, I will probably just live with a 20" answer but that isn't my favorite. The 21s I have now ride great (if a little squirrely when accelerating hard out of turns). Thanks in advance for any advice.