Once you know the tires can handle the weight you are carrying, you can determine just how much pressure you need. Too much pressure and you will prematurely wear the center of the tread. Too little pressure and you will wear the edges and possibly destroy the tire (and maybe your Jeep and yourself).
A common technique to make sure your pressure is correct is to make a chalk line across the tread of all 4 tires. Drive a few blocks on dry pavement and inspect where the chalk wore off. Experiment a little with different pressures until the chalk is wearing evenly. That determines how much air pressure is needed to support the weight of the vehicle for on road use.
Many people find subtle advantages to fine tuning tire pressure like this. “Bouncy” ride might go away because too much pressure was not allowing the tire to absorb road impact properly (think about how an over inflated basketball is harder to dribble). Handling will improve if your pressure was too low (sidewall “squirm” makes high speed cornering a challenge). A few minutes of quality time with a good tire pressure gauge can help ensure your tire investment will last a long time, provide trouble free service, and give you the best possible traction both on and off the road.
Related – Repairing Synthetic Winch Line
* Published by JPFreek Adventure Magazine – The leader in Jeep and adventure enthusiast publications.