That was originally my intent too on my 2020 JLURD. The factory wheel width was too narrow per BFG specs so I ended up doing wheels too. No lift, no rub, slightly harsher ride (but my tire pressure is 45psi, still adjusting it down. I put the KO3's on mine.
My son got me this for Christmas. It was an easy install and seems to have reduced cabin noise. I'm in FL so haven't noticed it being warmer or cooler as of yet.