Abstract: The present work explains the influential effect of nanofillers for improving the barrier properties of a tyre inner liner. The study has revealed that organoclay Cloisite 30B when explored in a TBR inner liner recipe containing Bromobutyl rubber (BIIR), shows significant improvement in barrier properties without affecting the cure characteristics and mechanical properties of the compound. At 4 phr dosage, the improvement in air retention is approximately 12%. The experiment has also demonstrated that to maintain the air impermeability same as that of the control inner liner, thickness can be reduced up to 56% while using experimental recipes containing organoclay.