Gold embellished its tyre for simplicity (9)
I believe the answer is:
austerity
'simplicity' is the definition.
(thesaurus)
'gold embellished its tyre' is the wordplay.
I cannot really understand how this works, but
'gold' could be 'au' (Au is the chemical symbol for gold) and 'au' is present in the answer.
'its' could be 'it' (I've seen this in other clues) and 'it' is found in the answer.
an anagram of 'tyre' is 'tery' which is located in the left over letters.
A single letter 's' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for austerity that I've seen before include "Severeness of manner" , "Self-denial of pleasures" , "Absence of luxuries" , "Severe self-discipline; lack of luxury/adornment" , "Severity of manners or life" .)