I've told you that on many occasions.
When tire people at the track see me coming with R1 rear rim in one hand, and Dunlop slick in other hand they start to cry. Worst possible combination ever. The tire is incredibly stiff. And they have nice machine. Fun starts immediately. First -" this fucking guy again", and then very colorful combination of very nice vocabulary related to removing old tire and installing new one.
Tire change goes for 20 bucks. They told me they would pay me 20 bucks if I never show up with that fucking rim again. 😂