car tire vs rubber tire

car tire and rubber tire both are nouns.

Word	Noun	Adjective	Verb	Adverb
car tire	Yes	No	No	No
rubber tire	Yes	No	No	No

As nouns, car tire and rubber tire are synonyms defined as:

car tire and rubber tire: a tire consisting of a rubber ring around the rim of an automobile wheel

Other synonyms of car tire include auto tire, automobile tire.

car tire (noun)	rubber tire (noun)
a tire consisting of a rubber ring around the rim of an automobile wheel	a tire consisting of a rubber ring around the rim of an automobile wheel