Suspension upgrade - technical document?

[Cédric Escher]

Hi all. i have just upgraded my suspension and coil with a KW version 3 suspension. This also lead to lowering the car by about 1.5cm.

While in Germany, Switzerland and Austria such a modification of the car needs to be approved by some authority (TÜF), no one in SK could tell me if I have to get an approval or not. Even my insurance contact said no.
most answers stated that I only need some confirmation when the color of the car changes…

any other information here?
thanks

 

[ivan32]

I am not an expert but I also think you do not have to have anything approved as long as you pass the STK (technical check after 4 years from purchase and than every two years). The part with the color is true since the color is stated in the vehicle registration document where the suspension is not mentioned.