Wrecked, replacement of odd tyres saving vehicle, finally (9)
I believe the answer is:
destroyed
'wrecked' is the definition.
(similar in meaning)
'replacement of odd tyres saving vehicle finally' is the wordplay.
'replacement of' indicates an anagram (I've seen 'replacement' mean this).
'saving' is an insertion indicator.
'finally' indicates one should take the final letters.
The final letter of 'vehicle' is 'e'.
'odd'+'tyres'='oddtyres'
'oddtyres' is an anagram of 'destroyd'.
'destroyd' placed around 'e' is 'DESTROYED'.
(Other definitions for destroyed that I've seen before include "Put an end to" , "Annihilated" , "Demolished, ruined" , "in ruins" , "Took out" .)