Take a look at my small .mpg videos of a test you can do with the wheel(s) off and the car on jackstands (especially if you feel the need to crawl under the car and have a look while someone carefully mans the breaker bar. If the front wheels are on the ground, be sure to put wheel chocks at both the front and rear of each tire). Make sure the trans is in Park and the E-brake is on, or have a helper in the car with their foot on the brake pedal.

"Bad Link.mpg" shows worn inboard bushings on the upper forward link (thrust arm?).

"Worn Bushing.mpg" shows an overall view of what numerous worn bushings looks like.

What isn't visible is the view from the top, where you can see the wheel toe inwards noticeably. In extreme cases, this will cause accelerated tire wear on the inside of the tread, but some extra wear is inevitable if there's any wear at all in any of the bushings. Be sure to check the inner and outer lower control arm bushings as well. I was surprised to find both of them quite worn on my 86 300E with 155K mi. on it.

Youi'll need QuickTime or Windows Media Player to view the videos

Hope this helps,

Gary