Sound during wet weight shift

[Legacy5.0]

Under typical driving conditions, my cars suspension is completely quiet and behaved, but under wet conditions my car has developed a metallic "pop" and "clank" sound coming from the right rear. This has been happening some time now and only when the car has been driven in the rain.

It's triggers: Park to D shifting, Reverse to D shifting, firm or sudden braking, some tight cornereing.

Any idea what it could be?

 

[1990_GT]

I had a similar problem, one of my rear upper control arm was a little loose, tightend it down about a week ago and havent heard it sence.

 

[Legacy5.0]

Thanks for the tip, I'll check it out.