Wheels on a New York taxi may be so worn out (5)
I believe the answer is:
tired
'worn out' is the definition.
('tire' can be a synonym of 'wear out')
'wheels on a new york taxi may be' is the wordplay.
I cannot really see how this works, but
'on' could be 're' ('on' can be mean 'with reference to') and 're' is found within the answer.
The remaining letters 'tid' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
'so' is the link.
Can you help me to learn more?
(Other definitions for tired that I've seen before include "Sleepy" , "Physically or mental weary" , "Dressed once" , "Depleted of energy" , "Ready to drop" .)