General Question: What do these purple lines mean?

Hi, my question is what do the purple lines around the wheels mean? What are they showing?

P.S. this isn’t my work I downloaded this from from jimbo45uk.

i think these are seams for unwrapping !


Those are crease lines. They appear when you select an edge and press N the go to the properties panel. You’ll see a slider called “crease” that’s set at “1”. Bring it down to zero to make the purple lines disappear. Those lines will help that part of the mesh retain its shape when you use the subsurf mod

Ahh ok; thanks.