Crossword Genius

Don’t do away with Phoenician city corporation (5,4)

Ross

I believe the answer is:

spare tyre

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'corporation' is the definition.
(I've seen this before)

'don't do away with phoenician city' is the wordplay.
'don't do away' becomes 'spare' (I can't justify this - if you can you should believe this answer much more).
'with' means one lot of letters go next to another.
'phoenician city' becomes 'tyre' (I've seen this in another clue).
'spare'+'tyre'='SPARE TYRE'

Can you help me to learn more?

(Other definitions for spare tyre that I've seen before include "Car wheel part or inflated tummy" , "Form of extra weight" , "One ought to go on the wagon, just in case" , "large corporation" , "rubber one gaining traction?" .)

I've seen this clue in The Times.
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