Hello, it seems like the subdivision surface modifier wants to create some weird geometry in the center of my wheel, i don't know how to fix it, can someone help me ?
Good to see you've managed to fix it. For future reference, whenever subdiv gives you weird results check for the following :
- Multiple vertices on top of one another. Select all your verts --> alt+m --> merge by distance to see if that fixes it
- The normals on your faces. Turn on backface culling and/or select your model and shift + N / shift+ctrl+n to recalculate / flip your normals.
- Interior faces
- Check the sort order / individual settings of your modifiers