CUT rib rack crosswise in half; place both halves in large resealable plastic bag. Add dressing and lemon juice; seal bag. Turn bag over several times to evenly coat ribs with the dressing mixture. Refrigerate at least 1 hour or overnight to marinate.

PREHEAT barbecue to low heat. Remove ribs from marinade; discard marinade.

GRILL ribs 30 min. or until cooked through, turning and brushing occasionally with the barbecue sauce.