I used TAC SYSTEMS tire coATING on several cars and thought it was worthwhile, but I had to use a tire applicator and put it on and be fairly careful. Now I’ve gotten so lazy that I’d rather use a $5 spray can of black magic SPRAY FOAM which I don’t even have to bend down for , and do them every 2 weeks or so , and they look great. So it all depends on what you’re looking for, I guess.