I am aware that everyone adjust this to their preference, but I'm seeing most are at 30+ psi on the rear shocks, I tried 20 and my wife has a horrible ride, 15 seems to be optimal for her, shes about 120lbs, I'm 260 and It makes no difference to me what the psi In the rear Is, It doesn't change my ride at all.

My setup Is 23 psi both rear tires and 15 at the shocks, rides beautiful.

 

It's whatever works for you. I keep mine at 35, but that just me; I have friends that run between 15 and 20 and that's their sweet spot

 

I ride solo so I can run with very little air in the shocks. Around 12 psi. I might bump it slightly for a long trip when I'm loaded with around 15/17 lb of clothes in the cargo compartment.

 

We have Progressive air shocks, and lift kit, we run right around 25 PSI. Also have Good Year comfort tread tires we run at 25 PSI. Very comfortable for us. Much better than stock shocks and tires.

 

Yup, as soon as I wear out the oe tires I'm going to a different brand. Most likely Bridgestone runflats.

 

Yep, most people have their own settings, mine are/ Front tire at 36, Rear tires at 25, and shocks at 20. Once in a while I'll change the shock setting.

 

When we picked our 16 TG we took it down the road about 10 miles for a bite to eat. We got off and looked at each other thinking we had made one big mistake. What a rough riding SOB! After we got home I checked the shock pressure and found it at 25 psi. I'm 235 and my wife is around 135. On our 12 Ultra we ran about 45-50 so up she went on the TG. That made all the difference.

 

Was running 50 in the shocks and riding mostly secondary roads. With 22 in the tires and 2up we bottomed out a lot. Hurts the back when unexpected. Went to pro actions on the rear and solved the problem. Now the front seems way harsh.

 

I haven't found that sweet spot yet.... 40 thousand miles+' And to be honest i don't think there is one...Just when i think i found it... I ride over a few bumps and realize i haven't found the magic number yet.. Too much psi and a hard bump will jar you .... Too little psi and the shocks will bottom out...There isn't any middle ground....

 

If you are trying that with the stock shocks give up & put some good shocks on. I changed to progressive air shocks, but there are those that prefer to have a manual adjustable shock. Both seem to work well.
Mine had a habit much like you describe with yours. But to have a shock that works like a real shock & not an air spring will make a world of difference.
The reason I went with the air is I change loads a lot & didn't want have to get under the trike or take off a wheel just to adjust the shock weight capacity.