18-12-14, 01:25 AM
If it's the OEM mirror, then robin78842 is right, it's a rivet and there's no easy way to tighten it up.
I had a similar problem on my right mirror until (after a drop) I had to replace it, but although the first replacement I got had a bolt with a screw head, it appeared to have been secured with Red Threadlock which will only release after being heated to about 300 degrees centigrade(!), so it was impossible to fold in or adjust the tension.
I then got another replacement which I could change the tension on which is good because I like being able to pull in the right mirror when I'm filtering through narrow gaps to give a bit of extra space.
I had a similar problem on my right mirror until (after a drop) I had to replace it, but although the first replacement I got had a bolt with a screw head, it appeared to have been secured with Red Threadlock which will only release after being heated to about 300 degrees centigrade(!), so it was impossible to fold in or adjust the tension.
I then got another replacement which I could change the tension on which is good because I like being able to pull in the right mirror when I'm filtering through narrow gaps to give a bit of extra space.