Tiberius did not maintain a positive relationship with any of the differing groups in Rome.
His relationship with the senate was strained by their sycophancy and his own manner, the plebians were not impressed with his frugal an understated style of administration.
Although within the principate the senate did not play a meaningful role anymore, Tiberius still attempted to involve them in rule.
Either through unwillingness or inability, the senate failed to act purposefully.
It is clear that Tiberius became more exasperated with the senate throughout his reign.
His relationship with the plebs was not good.
He didn't spend large amounts of money on games or largesse as Augustus had, however this meant a full treasury could be used to aid in disaster in Rome or the provinces, or to develop the city further.
Tiberius tried to promote the economy and reduced the sales tax on traded goods.
Tacitus says that he directly interfered in a shortage of money by distributing 'a hundred millionsesterces among specially established banks, for interest free three year state loans' and credit was restored.