Give up, finding broken wheel not worth it (5,2,3,5)
I believe the answer is:
throw in the towel
'give up' is the definition.
(synonyms)
'broken wheel not worth it' is the wordplay.
'broken' indicates an anagram.
'wheel'+'not'+'worth'+'it'='wheelnotworthit'
'wheelnotworthit' with letters rearranged gives 'THROW IN THE TOWEL'.
'finding' acts as a link.
(Other definitions for throw in the towel that I've seen before include "charge nothing for additional item" , "surrender after trading blows?" , "Give up a venture" , "admit defeat" , "Make a concession" .)