Step 1: Combine the coffee and oil in a bowl. Brush each steak on both sides with this mixture and season generously with the rub.
Step 2: Set up the grill for direct grilling and brush and oil the grill grate.
Step 3: Grill the steaks over high heat, turning once, until nicely seared and medium-rare, about 4 minutes per side. Let rest for 3 minutes before serving.