Tyre pattern needs a bit of smart readjustment (5)

I believe the answer is:

tread

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'tyre pattern' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'a bit of smart readjustment' is the wordplay.
'a bit of' indicates the answer is hidden within the clue.
'TREAD' can be found hidden inside 'smart readjustment'.

'needs' acts as a link.

Can you help me to learn more?

(Other definitions for tread that I've seen before include "March" , "Walk or step like pattern on tyre" , "Gripping part of tyre" , "Rated (anag)" , "Stomp heavily" .)

I've seen this clue in The Irish Independent.

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