Rubber tyres a repairman partly rejected (6)
I believe the answer is:
eraser
'rubber' is the definition.
(I've seen this before)
'tyres a repairman partly rejected' is the wordplay.
'partly' indicates the answer is hidden within the clue.
'rejected' says the letters should be written in reverse.
'resare' can be found hidden inside 'tyres a repairman'.
'resare' written backwards gives 'ERASER'.
(Other definitions for eraser that I've seen before include "A schoolboy's rubber" , "Rubber, thing that wipes out" , "Rubs out" , "Stationery item" , "It could remove" .)