Not sure if this helps but I have a 2014 Bounder 35k and I run at 90psi on all six tires. My ride
is very comfortable. Check the side wall on your tires for recommended pressure
I once had a 2015 Sunseeker that was brand new when we bought it, only 350 miles on it then.
It road awful and steering was horrendous. My mechanic told me it had to loosen up , and it did
around 5000 miles. It was night and day.
Don