I lived on a hilly road with 14 speed humps when I had the +4. We lived in the middle, the extra 1 psi helped ground clearance on the 4/4, +4 and the Roadster.

Now I live on the flat 22 psi is fine.

JohnV6
2022 CX Plus Four
2025 Renault Scenic Alpine etech "Yvette"