Public fury over introduction of stealth taxes (9)

'taxes' is the definition.
Although both the answer and definition are verbs in their -s form, I don't understand how they can define each other.

'public fury over introduction of stealth' is the wordplay.
'public' becomes 'overt' (both can mean well-known or unconcealed).
'fury' becomes 'ire' (ire is intense rage).
'over' means one lot of letters go next to another.
'introduction of' suggests taking the first letters.
The first letter of 'stealth' is 's'.
'overt'+'ire'+'s'='OVERTIRES'

Can you help me to learn more?