Seeing this pop up reminded about the tread on M3post about various hardware issues after going spherical.
https://www.m3post.com/forums/showthread.php?t=1781245
Quote:
Originally Posted by amg6975
After doing spherical I had one bolt on both sides back out. I Loctite'd them but one of those bearings was pretty shot. This spring when I replaced that bearing I also had the thought to use some nicer bolts. Single shear bolts freak me out.
ARP 664-1009 is what you want. I installed with a little dab of medium Loctite just because. If your car has some miles on it you may want to run a M12x1.5 tap through the knuckle, the stock bolts don't go all the way through in two of the locations so it was a little crunchy to get the ARP bolt all the way in.
Torque spec is 98 ft-lbs for the ARP bolt. There are three locations on each side.
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I have not had any issues since switching to the ARP bolts.