206 rear right tire rubbing against fender.

The right rear tire of my 206 roland garros is rubbing against the fender, but there is nothing on the left side. This problem occurs when 1 or 2 people get on the back. My guess is that it's due to torsion because my car's tires are 175 65 14. What do you think might be the cause? Should I go directly to torsion care?

It may be due to torsion. Do you see the rear wheel wobble while driving?