I have a 2010 superb kombi whit 2.0 tdi engine. It has a rough road option. I took it to inspection and right rear spring is cut. How is it differend from standart can I use standart spring? Thank you for answers.

most likely spring rate (spring hardness) and length.

 

For off road, there will be longer and softer springs...smooth roads, harder and shorter springs.

 

Mixing different springs would be kamikaze style I guess ;-)

you may find an equivalent on Lesjofors application pages