31 Dec 2010
Was running at HHR in Austin earlier this month when I heard a loud "pop" and my driver's side front wheel suddenly felt wrong... like I had suddenly corded or flattened the tire. I limped into the pits and found a broken wheel stud. I was considering upgrading to ARP wheel studs based on some earlier posts from Sharif and others, I guess my decision to do so is now made for me.
We noticed that the center nut securing the hub had actually come loose, and was being held on by the safety pin(!) You can see in the pic how the nut is sitting flush against the pin. This was only on the corner with the broken wheel stud. Not sure if this is what caused the stud to break, or if the broken stud caused the nut to begin backing out. Moral of the story - guys tracking your cars, check the torque on your hubs, and consider proactively upgrading your studs.
Center nut securing the hub removed:
After removing the caliper and rotor, the hub assembly is secured by 4 bolts from the back. First 2 pics below are of one of the rear hubs, the rest are of the front.
OEM studs removed:
ARP stud on left (3 inches long), OEM in middle, broken OEM on right. AFAIK, you can't get the ARP studs in a 1.25 pitch that are shorter than this.
Pressing the ARP studs into the hub assembly, then each secured with a small spot weld.
Mounted back on the car.
Edited by icarus, 07 October 2014 - 08:04 AM.