Even though bigger wheels will limit the rotations given a certain distance, you are also adding rotational mass with bigger wheels. Therefore, even though there are less rotations, the vehicle's engine will apply more power to rotate the heavier wheel.
Rota Circuit 8's @ 12 pounds each and 205/50/15's. The front passenger did rub slightly if I bottomed out the suspension, but otherwise they are great. I wouldn't recommend running it in the snow as there is simply no grip. In the dry and even over sandy basins, it's great.. not that you should be going over sandy basins in a car that has a little over 2" of ground clearance.