The new compact yarn spinning system appears to eliminate the spinning triangle problem in the conventional ring spinning process, and is claimed to bring many advantages of yarn quality. However the benefits of this new concept are still to be investigated extensively. In this research work, we produced plain knitted fabrics by using conventional ring-spun and ring-compact yarns. These fabrics were knitted and dyed under identical conditions. We then tested these fabrics for their appearance after different washing cycles, their pilling behaviour their colour differences and bursting strengths. The change in the surface of the fabrics after washing in different cycles shows that fabrics of compact yarns maintain their appearance, while others seriously deteriorate. Pilling test results show that the pilling tendency of fabrics of compact ring yarns is much better compared to those of conventional yarns, as expected. On the other hand, test results regarding colour difference indicate that there are significant differences, as the fabrics of compact ring yarns have darker shades. Finally, fabrics of compact ring yarn have generally higher bursting strength, but the differences become less significant as the loop lengths increase in the fabrics.