it evolves at level 55.
Evolve Larvitar, which you get at Seavault Canyon on Seven Island.
at level 30 it evolves to pupitar, and at level 55 pupitar evolves into tyranitar
Pupitar at level 30 and into tyranitar at level 55.
Tyranitar isn't anywhere in the wild in Pokemon FireRed. You will need to evolve it from Pupitar. It is required to get a Larvitar first, however; it is in Seavault Cave and can evolve into Pupitar at level 30, then Pupitar into Tyranitar at level 55.
LEVEL: 72
You must train a Larvitar to level 30 or so in order for it to evolve to Pupitar.
It is Pupitar.
In Pokémon FireRed, there is no evolution stone item that will allow Larvitar to evolve into Pupitar instead you will need to level it up until it reaches the level of Level 30 and then you will be able to start evolving it into Pupitar at that point.
Pupitar will start to evolve once it hits Level 55.
larvitar---> lv 30 =pupitar----> lv 55----> =tyranitar
Pupitar evolves at Level 55.
Pupitar > level 55 > Tyranitar