Will weigh exactly the same as the stock set up. The Bridgestones 215/45s currently on weigh 25lbs and the wheels weigh 20.8lbs. The Michelin Pilot Super Sports in 245/40 will weigh 25.8lbs and the Gram Lights weigh 19.4lbs. So basically I lose a little weight while gaining grip, and some style points as well! This makes me very happy. I am so ready to get wheels. I am actually very excited. . . in case you didn't notice.