I do track the car a lot. But still...

 

Haven't replaced any yet but during my last track event I started hearing a low groaning sound when making hard right turns. i thought it might be the exhaust moving around but that's not it. Can you describe that symptoms you have when they go bad? Also, did you get the bolt torque specs? If not I can look up.

 

Yeah, the sound is a low roar - like a 4x4 with monster mudders-ish. The car is sill there waiting on parts. They are replacing BOTH sides this time.

As for the axle bolt: That is a 1-1/2" nut torqued to 177 ft/lbs.