Sound of exhaust, one of four on Lambo? (4)

I believe the answer is:

tyre

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'one of four on lambo?' is the definition.
I can't judge whether this definition defines the answer.

'sound of exhaust' is the wordplay.
'sound of' indicates a 'sounds like' (homophone) clue.
'exhaust' becomes 'tire' (synonyms).
'tire' is a homophone of 'TYRE'.

Can you help me to learn more?

(Other definitions for tyre that I've seen before include "subject to inflation" , "Rubber wheel cover" , "Something with a tread" , "Wheel-hoop" , "Rubber wheel-cover" .)

I've seen this clue in The Independent.

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