+0
"There are many types of car tire."
"There are many kinds of car tire."
"There are many sizes of car tire."

The first two sentences is good English? But for the third sentence, should "tire" be singular or plural? A size is not really a type or a kind. Or is it?
+0
DisposeThe first two sentences is good English? But for the third sentence, should "tire" be singular or plural?
Tire should be plural in all three sentences. Other than that, the three sentences are OK.
DisposeA size is not really a type or a kind. Or is it?
They're not synonyms, if that's what you mean. However, in this case, some car tires are of their own kind by reason of their size, e.g., monster trucks. I think in this case kinds and types and maybe sizes are interchangeable. If you want to use sizes, this sounds better: Car tires come in many sizes.
Comments  
According to the rules, singular. But 95% of native English speakers would say "tires" (plural). How people speak and what the grammar books say do not always agree. Languages are ever changing; they are organic. A good example of that is to look at a contemporary blog, such as www * gainespost * com, and read some of the science fiction posts there. They are full of colloquialisms; it is all "good English," as in, native speakers would speak that way, and I'm not even talking about slang. Sorry it's not a simple answer :-)
 RandomGuy's reply was promoted to an answer.