Many use a form of mud flaps behind the slicks to prevent the rubber from hitting the paint. That or use clear 3M removable protective film on the lower quarters.
I have small mudflaps that stop a bunch of the crap, but I also put on that 3M protective film about 3 years ago, and that stuff is an excellent product. One width of the sheet went from being wrapped around the bottom of the quarter, up to the top of my rear quarter light, and it runs from the rear seam to the fenderwell. It's pretty easy to apply, but even if you mess up the first time, there's plenty on a sheet to do it over and over. You can easily, but carefully trim around anything you want.It stops everything from sticking bad, stops stone chips and the scratching that comes from cleaning gritty gunk off. You can just barely see the edge of the film, which I'm fine with given the level of protection it gives the lower quarters. When it starts to pull the edges up from age, peel it off and put on another piece. After 3 years, mine is just starting to in a couple of small spots at the rear, but it's hidden by the bumper. Good stuff.
