Select surface of close body for applying internal pressure

[papasumit]

I’ve one close body (Tire), and want to apply internal pressure… To apply internal pressure, I need to select the internal surface. I’m not able to take sectional view and to select the area to apply force.
Any help?[SimScale](https://Tire Pressure)

[tsite]

Hi, this is Fillia Thank you for using the forum!
To apply pressure on an internal face, select the the external one, right-click on the workbench, and choose the ‘Hide selection’ option from the menu:

Then the internal face will be visible

Best regards,
Fillia