Comparing 20 inch tire and wheel performance to 18s and 17s for the first time.

Are 20 inch wheels and tires better for handling heavy loads? Is the firmer ride on rough surfaces (both paved and not) work the added lateral stability? How about or all-around, dual-sport, and overland uses? I've never run 20 inch wheels before, preferring the proven off-highway formula of less wheel and more tire sidewall. However, about a week ago I bought a used set of stock Dodge/Ram 20 inch wheels and tires, and have been driving on the worn factory tires to establish a 20 inch tires and wheels baseline on my heavy camper truck.

Tires and wheels at the end are: Toyo C/T 35x12.50R17 on Ram forged aluminum (WFV) Power Wagon Wheels, Toyo R/T 285/75R18 on Ram Forged aluminum (WBJ) Big Horn wheels, Firestone 285/60R20 on Ram (WF3) black painted, aluminum, Black Appearance Group wheels.