All I can say for sure is that my car stuck to the ground with much more confidence when I switched wheels, but that was probably 80% responsible due to the BFGoodrich KDW tires, and 20% because the rear wheels were wider.
You can't go wrong though as far as size and weight is concerned. The stock wheels are 16" 16 lbs. These are 18" ~18 lbs. It doesn't get much lighter than that.