The Upholstery Forum

I just relized I have been using the piping feet on my machine the whole time I switched them to the other feet that came with my machine are these the correct feet to sew automotive vinyl and some leather?

Vinyl yes, leather no.

I'm sewing and topstitching with my welt foot on right now I'm usually to lazy to change feet. If it works I wouldn't worry. I have used different welt feet that didnt sew well and had to change those.
The foot in the picture has the grippies ( ) on the bottom. It may mark or put small cuts in softer vinyl or leather. You can get the same feet with a smooth bottom

Yep! Exactly what @Susy said.