Minimum radius curve for N scale challenger

Does anyone know the minimum radius curve that the n scale athearn challenger would 1) work well on, and 2) look good on.

I’m thinking of using a 12 inch curve and wanted to make sure it would take it well.

From N scale supply .com,

“Front and rear engines (cylinders and coupled drive wheel sets), both pivot for 9-3/4” recommended min. radius."

To be safe I wouldn’t go below 11" to work well, and at least 18" to look decent, but thats just me. It all depends on what your definition of “looks good”.