You will definitely notice a difference in ride quality, although going down to an 18 will give you more tire which will help. Don’t underestimate those KO2’s in snow. I live in snow country and used them year round on my last 5th gen, as well as my previous truck. I commute 55 miles round trip daily, ski on the weekends…the KO2’s performed incredibly well in snow, and lots of it. Never once considered swapping out for a dedicated snow tire. Just my little addition there for ya. Good luck and enjoy!