I have Conti CT22's on mine and I love them.
The guys at New Elms suggested running at 20 psi to match the Rutherford suspension.
The car rides smoothly over the bumps and holds the road very well in the country lanes.
I'm very happy with 20 psi.
I should add that I have a 4/4 which is a pretty light car, heavier ones may need more.

Paul

2009 4/4 Sport in Red
2022 Harley Davidson FXLRS Low Rider S
1977 Triumph Stag