Through Trike talk I learned back in 2016 to try Goodyear comfort tread tires same size as Harley Dunlops at 20-22# and found a remarkable improvement in the ride! It was true the Dunlops were engineered with a stiffer sidewall on purpose.
Now I'm back on another trike being a 2015 as of 12/27/22 and ready for those tires which no longer exist! Anybody out there with experience with another 15" tire approx 205/65R with very flexible sidewalls like the comfort tread?