Yes, i saw another guy who Just drill and tapped into the alloy wheels, but everyone i spoke to, said that was really bad idea. plus i didn't want insurance companies to be able to argue that i had modified the wheel. Insurance for modified wheels was more than for custom hubcaps. I just centre the bracket by eye. but the hoze clips on the spokes seemed to work like a chuck maybe?
anyway i've had them on a decent time now and they havent fallen off. i will check them reguarly tho. they get lots of looks as i think it makes the car look futuristic.
I haven't tried to measure range improvements as it would be too difficult. i'm just going to believe in the research papers that others have written.
