Tyranitar - how many are too much?

I think many have 6 tyranitars for meeting raids. 96% with good movement should deserve the investment.

PS: I got 5 ready. In case I get a (near) perfect one, I'd power up to have 6.

You need more Crunch.
Why level 32?
Tyra's defensive breakponit vs Mew2's Confusion is level 32.5!

A second B/C Tyranitar is definitely not "too much". It is perhaps not too exciting but Ttar is such a strong mon for the current raid meta.

How many Ttars do you need? As others have stated, ideally you would have 6. But for Mewtwo, 6 Ttars may actually be a hindrance; if the Mewtwo has Focus Blast, those won't do much good.

So while I'd pump that one up... if you can pump up a Scizor or some other Good Counter, I'd pump them up too. On the raids I'm planning on having a team of 3 Ttars, 2 Scizors and a Lugia just in case it turns out to have Focus Blast.

I set my limit at 4. Won't power up more than 4 T-Tar or dragonite. You might make good use of more than 4 for raids, but in the long run when we have stronger pokemon like mewtwo and other legendaries we are not going to use T-Tar as much

You definitely don't have too many TTars.

I think having 3 of each (B/C and B/SE) powered up is kind of the minimum number you'd want to have before you might consider NOT investing in more. And personally I'd prefer to have 4 of each, B/C in particular.

Personally I have 4 B/C over level 30, and I'm glad I do. For soloing Alakazam and Gengar, Lugia raids, and the upcoming MewTwo raids. I have 2 B/SE over level 30, but since I have good rock Golems I didn't feel as much of a need.

And of course, they are also valuable general attackers in case the meta changes in the future. Of course if we ever go back to a CP-based gym scene, they would be valuable as defenders (even though they're not good defenders...high CP ones were extremely valuable before)