Trainer use and tires

I could not find any indication in the manual.

After every use is it a good practice to release the tyre lock or I can keep it in position?

The only thing that comes to mind is that the tire gets damaged under continuous load.

I found that I would be better to use a tyre specific for the trainer.

Have you any suggestion? Currebtly I have a Continental Ultra Sport 700 X 25

I saw there is the Continental Home trainer 700 X 23 or 700 X 32.