[Drifter]

Originally Posted by Blacktree

On another member's 3rd gen Prius they had a measurable mpg gain. Link: https://ecomodder.com/forum/showthre...ted-30234.html

True, but that was compared to no wheel covers at all. The factory wheel covers are more aerodynamic than bare alloys...

Unfortunately the previous owner threw away the wheel covers on my prius, as do a majority of owners and tire shops...