So I've managed to break 2 front shock towers so far, with about 20 packs through the car at our local carpet track. (drprc.com)
I've seen pics on B6 nation of broken shock towers as well as others at the tracks. They seem to break at the hole closest to the center of the shock tower. This makes sense as its the obvious stress riser. The failures on mine where the result of an impact to the front of the vehicle, and not from a load in which the tower was/is designed to carry.
That said, if you're not using the upper/outer most shock mounting hole, consider deleting that part of the tower via sanding/grinding/dremmeling it off. This reduces the "lever" acting on the area of tower's arm that's prone to breaking.
There will be those that may not agree with this line of thinking and that's fine. But it's either this or fabricate an aluminum tower for me.
I lack the post count to add pictures. So here is the link.
https://www.facebook.com/groups/1464...2369150323808/