Kanye West's epic stage rant against Beyonce and Jay Z has sparked speculations that not all is well between the Wests and the Knowles. A new report suggests that the music mogul is not happy with Yeezy.

"Jay can't stand [Kanye]. He looks at him as this crazy, eccentric motherf***er he can tolerate in small doses. Kanye is a nut job. Everyone knows that" an insider allegedly told Page Six. Hollywood Life reports that the rappers are not as personally close as fans think they are. And Kim Kardashian's Paris robbery case was just the last straw in escalating their tension before the public.

"Tension has been brewing between Jay Z and Kanye for years. They are friends but they have never been as close as some people think. Kanye is a polarizing guy, even to someone like Jay Z. He's never been one of Jay's inner circle," a source told the website.

The 39-year-old Life of Pablo rapper went on a public rant against Jay Z without naming him during his Seattle concert on 19 October. "Don't call me after the robbery and say, 'How you feelin'?' You wanna know how I'm feeling? Come by the house ... Bring the kids by the house, like we're brothers," he said and later accused the music mogul's online music streaming service as 'bulls***'. "It went into some Tidal/Apple political s**t about percentage on songs. I can't take this s**t, bro! Our kids have never even played together," West added.

Kardashian, who celebrated her birthday on 21 October, was robbed of jewellery worth millions at gunpoint at her luxury Paris apartment on 3 October.

According to the Hollywood Life report, the Holy Grail singer is not a fan of West's constant outburst in public. "Jay definitely respects his musical talent and creativity and they have had some good times together. But over the years Kanye has really started to grind on Jay. There is only so much he can take of Kanye's up and down, drama filler personality," the source added.