Whisk together beef broth and barbeque sauce in a medium bowl.
Place beef tenderloin steaks in a medium bowl and cover with the beef broth and barbeque sauce mixture. Cover bowl and place in the refrigerator. Allow steaks to marinate a minimum of 2 hours (overnight is preferable).
Preheat an outdoor grill for high heat and lightly oil grate.
Grill steaks on the prepared grill for 7 to 8 minutes per side, or to desired doneness.
