On my q7, going from oem 20s with winters on it to the 22s with a ps4s is a 14lb/corner difference. It's such a drastic feel difference, it's honestly quite staggering. The tire has a lot to do with it, but it's more than just that. The car goes from being very standard suv around corners to behaving like a hot hatch.As others have mentioned, and from my own experiences. Yes, the science is correct and it does make a difference, BUT it is a VERY small difference. For it to be noticeable, the weight change has to be very large. I.e. comparing a 40lbs to 30lbs wheel is not perceivable.
I always think it's funny how the people who go crazy about saving 5lbs per corner on wheels, are the same people who add +5lbs back on by doing a big brake kit/swap, spacers, and wider tires. They then claim the weight savings made a huge improvement!![]()