good tire pressure for 265/65r20

Hi guys, I have put on my 08 taco sport some new wheels, they are the lithium6 20" and the tires are yokohama avid suv 265/50r20 and I think the ride is good but I feel every hole on the road I think it is hard, what is the recommend tire pressure for this one? do you think 3.5 is too high?
Thanks

 

Says on the side of the tire. I'm running 265/50/20's on my truck, filled with Nitrogen @ 30 PSI. I would not put the max in the tire. With regular air as the tire heats up, the air expands.

 

Isn't pressure of a particular tire dependent on the load rating.

I may be completely wrong about this though and usually am.

 

If he is putting max pressure in his tires, it could cause a rougher ride(bouncier). Maybe back off the pressure a little. Mine are rated for 35 psi, but the tire shop always fills them to 30 psi.

I get them balanced & rotated every 7,000 miles (came with the tires Free of charge).