In a large stock pot bring beer, water and spice rub to a boil and stir.
Cut each rack of ribs in half and place in boiling liquid. Be certain all ribs are submerged (add more water if necessary). Reduce heat to a simmer.
Simmer for 1 1/2 hours partially covered.
Remove ribs onto a cookie sheet and generously coat with Maple Chipotle Grille Sauce. (You can prep to this point hours in advance–cover and refrigerate until ready to grill.)
Finish ribs off on a medium hot grill.
Ribs can also be finished in the oven at 350° F. for 20-30 minutes.