I have the same wheels in std black
I once had a front tyre blow out at 90mph neatly had an off
Bars waggling once than a mad bull , tyre practically on the rims - no damage
I have hit plenty of bad pot holes in 7 years of wheel ownership no cracks they are fine
Those wheels, and later model BST's have a braided wire loop molded into each side of the wheel for rigidity and strength, and don't seem to have any issues.
It was earlier model BST's without those that breaking problems seem to happen with.