There's not much to work out!
For most jets, your angle of bank is limited to 25deg.
For a 2 min turn and 25deg of bank, the maximum speed is about 170kts.
For a 2 min turn and 30deg of bank, the maximum speed is about 210kts.
With the angle of bank limited, once you exceed those speeds, you won't achieve a standard rate turn!
Eg. At 500kts and 25deg bank, it will take 6 mins to do a 360 turn!
There's an
online calculator here that shows what goes on!