Control arm failure?

No but I guess I'll be pulling control arms to check out mine.....

Care to share year, model, and miles of your steed

 

Looks like she hit a few pot holes on that side.

 

That's an early 360 arm. There was an upgrade later in the production run.

FYI The F430 arms were all forged instead of cast, and in 2008 the upper front went to the 599/Challenge type. These will fit a 360.

 

i can't see any crack???

 

Look at the photo on a PC or laptop, not your phone.

 

Did you sand/grind the surface about a half inch to each side of the crack? That and the lump hanging off the edge at the bottom of the image has me wondering if the part had a prior crack that was welded and ground smooth at some point.

 

how can you tell the difference? I thought 360/430 are all the same

 

Thank you.

 

Any chance the bush is corroding in the alloy and you are getting the arm stressed from the inside.
Push the bush out and see what you find

 

This same issue has happened on 02 thru 06 maserati coupe/spyder and Gransports