replace shimano press fit BB with Shimano BB-R60?

[newierider]

hi guys, i have a bike running the latest tiagra crankset, the bottom bracket is a "shimano press fit"
i am about to replace this crankset with a ultegra 6800 and i have this BB spare..
Shimano BB-R60 Ultegra 6800/105 5800 Hollowtech ii
i also have the correct wrench to install this.

i know nothing about bottom brackets, should i just leave the current "press fit" in there? or can i replace it with the bb-r60?

sorry for the noob question!

[A_P]

leave the current one where it is.

[Duck!]

You cannot replace a press-fit with a threaded bottom bracket.