Place turkey in a large baking dish or roasting pan.
In a medium bowl, combine salt, 1/4 cup sugar, 1 tablespoon garlic and pepper. Rub all over turkey and under the skin where possible, using a large spoon to loosen the skin if necessary.
Place uncovered in the refrigerator for at least 12 hours and up to 3 days. It will dry out, but don't worry -- that is normal!
Remove turkey from the fridge 1 hour before roasting.
Place turkey in a roasting pan or on a large rimmed sheet pan on a roasting rack. Use cooking twine to tie the legs together.
Combine melted butter, 1 tbsp brown sugar and 1 tsp minced garlic and brush over turkey.
Heat oven to 425℉.
Pour water into the bottom of the roasting pan and roast turkey at 425℉ for 20 minutes, until just starting to brown.
Reduce oven heat to 350℉ and continue roasting until the turkey reaches an internal temperature of 170℉ in the breast, about 2-2.5 hours more.
Remove turkey from the oven and let rest for 30-60 minutes before slicing.