I grill them up for my wife to make her potato salad. She liked them grilled the day before, then throws them in the fridge until it's time to cut them & mix with sauce.
FWIW - Last time I did them I googled "what temp are potatoes done" and got this answer:
"210 degrees F.
Potatoes are done if tender when pierced with a fork and the internal temperature reaches 210 degrees F. Use a meat thermometer to test for doneness. You can also test for doneness by gently squeezing the middle of the potato (using a pot holder or oven mitt)."
source:
https://whatscookingamerica.net/perf...ked-potato.htm