Yes, TYRE is a Scrabble word!

Letter values in Scrabble US: T 1, Y 4, R 1, E 1.

Is it a valid word?

TYRE is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a port in southern Lebanon on the Mediterranean Sea; formerly a major Phoenician seaport famous for silks
hoop that covers a wheel

Not playable in Scrabble US: SUR.