I drove my wife's LR RWD 3 this weekend, and she has the 18" aeros. I was honestly jealous of all the extra range she gets. The car "coasts" a lot better (RWD), and gets like 240 Wh/mi., even driven somewhat "fun". Made me start thinking about getting 18" wheels, just to be more efficient, since its a struggle to get 200 miles out of a charge, but realistically, it shouldn't matter to me. I always start out wanting the most performance, then try to get most efficient as well. 18's would be more efficient and more comfortable, but not as attractive and softer sidewalls, so less performance. I'm sure the grass is greener either way. Do Stealths get close to 300 real-world range? I can't trade tires with wifey because of my brakes, but I'm intrigued to see the performance vs. efficiency difference in the 20's v. 18's.