Avoiding potholes in my area can't be done. Even some bridges in the area are heaving the asphalt up into large bumps. I've never seen the roads in such poor condition in my area. The last bad year I can remember was back during the ice storm here over ten years ago. I wouldn't go larger than 18" wheels if potholes are a serious issue.
My OEM GT wheels are beyond corroded so I'm hunting down a 16" replacement wheel and tire combo locally. As I don't drive the car more than 9-10K miles a year, long tire life/wear isn't a priority.
'11 Ram SXT 4x4 quad cab - 5.7L V8; 128,200kms
'09 Malibu 2Lt 3.6L - 140,000kms purchased 1 March 2019
'06 Pontiac G6 GT - 3.5L V6; 162,000kms (rear ended 15 Feb 2019, and given totalled title by insurance)