Replica that is covering alloy wheel (5)
I believe the answer is:
image
'replica' is the definition.
(I've seen this in another clue)
'that is covering alloy wheel' is the wordplay.
'that is' becomes 'ie' (short for Latin 'id est', 'that is').
'covering' means one lot of letters goes inside another.
'alloy wheel' becomes 'mag' (I can't explain this - if you can you should believe this answer much more).
'ie' going around 'mag' is 'IMAGE'.
Can you help me to learn more?
(Other definitions for image that I've seen before include "Likeness; statue" , "sculpture" , "Photo or likeness" , "Visual or mental representation" , "Visible impression" .)