I see, was just trying to save our friend here 1~2kg on the rear end. Dunno about handling... my forged ADV6 (V1 SL Series) are lighter than the stock wheels that came with that car. So light I can do wheelies when passing over speed bumps.
Grip, ah that. the trick is to find the cheapest possible tires you can find(in China!) and warm them up real good before hitting it. The rubber "melts" basically: Velcro-mode-ON! Excellent for the dusty Shanghai industrial Park, early Sunday morning, 0400am, cops & kids sleeping....
Is that what you meant by driving characteristic?