Either one seems more practical than rockets on a car. And modifying pneumatic tires to minimize this problem might be possible, if it's something that just has

Either one seems more practical than rockets on a car. And modifying pneumatic tires to minimize this problem might be possible, if it's something that just hasn't been prioritized because it wasn't that big of a problem before. Also, a sophisticated fan system might be able to make the downforce larger, yet less variable than natural downforce.