Difference between Tier and TIR

[Korin Dante MDe]

Difference between Tier and TIR?

 

[miathan]

An "e".
No, TIR is Tier Increase Rate. It's how fast the item gains tier ticks.
An item with TIR 200 is twice as fast to tier compared to an item with TIR 1.

 

[TheOneOmega]

So like, Tier is analogous to a bank account balance and TIR is analogous to its interest rate.