Do tigers ever eat giraffes

No, tigers have no way to hunt giraffes since giraffes are African animals and tigers are only found in Asia.
No. Tigers live in Asia, whereas giraffes live in Africa. Tigers don't have the opportunity to eat giraffes.
No, but only because tigers and giraffes live on different continents (tigers in Asia and giraffes in Africa), but tigers would eat them if they could. As an example, lions do prey on giraffes (rarely), and so could a tiger.
Well giraffes aren't part of the tigers diet so they don't always prey on giraffes. But I guess if there is no other food source they could try to eat them.

ANS 2 - Seeing as the giraffe lives in central Africa and tigers live in India, they would have to be well travelled tigers to try to eat ANY giraffe !