I use the stock Corolla steelies for my winter tires and Prius wheels for my 3 season tires, both are 15". The Prius wheels are ~14lbs while the stock steelies are ~21 lbs. I notice a pronounced difference between the two straight away after the swap, in the handling/steering response department as well the car's pep starting off even when driving conservatively. I know the winter tread/compound are completely different, but it is remarkable regarding the dead weight even picking them up and mounting them.
