Rubber wheel rim (4)
I believe the answer is:
tyre
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rubber wheel rim</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tyre that I've seen before include "Rubber wheel rim" , "Ancient city (made of rubber?)" , "Rubber wheel; port" , "Seaport once famed for its purple dye" , "Rubber surround on a wheel" .)