Hi, I haven't had success finding a happy setting for street driving with my 245/75R16 General Grabber AT 2 tires and the Rancho 9000s.

The max. pressure on the tire is 70 psi. I am running them at 58 psi and the Ranchos at 9.
The ride seems both bouncy (tires?), and rough (shocks?), at the same time.

Should I be running a different psi for firm, yet comfortable, street driving?
Should I max. the psi and drop the shocks to 7?

I guess I can play with the shock firmness; my question really focuses on aftermarket tire psi recommendations. If the max. psi is 70 on the tire, do you get best wear by running max. psi? Is it better to run under, maybe 10 lbs psi, to get some comfort with best wear? In this case, either psi option is still substantially higher than the intended recommended psi for the vehicle running OE rubber. Is this a problem for overall performance and ride?

Any suggestions, particularly regarding what psi for 245/75R16 General Grabber AT 2s for max. wear with best expected road comfort, given the max. psi on tire is 70 lbs psi, is appreciated. Thanks.