Board Thread:Naruto Discussions/@comment-26488946-20150612205152/@comment-5936871-20150612210431

Cause the Rinnegan doesn't grant any Sharingan abilities? The only Sharingan ability Madara used with Rinnegan is Susanoo, and that's because once Susanoo is unlocked with the eyes it can be used without them. Other than that, Madara never used any Sharingan abilities aside from Susanoo, which Nagato didn't have, his Rinnegan was permanent. He couldn't swap between Sharingan and Rinnegan at all.