Re: Why don't I like how my new GC Overland drives?
For the 20" wheels, 33psi seems to be the sweet spot for ride and handling. It's true that they are filled to ~40psi from the factory but as to why it is uncertain. At 36psi and up the ride is noticeably more jarring and the tracking is more scattered on crowned roadways. Running at 33psi alleviates all of that; not bad at all for wide 50-series tires. I love the ride, performance and fuel economy and maintain 33psi (cold) with no ill effect.
An expert is one who knows more and more about less and less until he knows absolutely everything about nothing.
2011 Jeep Grand Cherokee 4x4 Ltd
Silver, Hemi, 20" wheels, minimal doodads.