I have come across this problem before with materials were a material was selected on its tensile strength and not its yield strength. Tensile strength has little meaning in many cases except you can use it to quickly guess how ductile a material may be. Its a bit like those inverters that are sold as 2kw but actually only supply a constant load of 800w but 'may' take 2000w for a millisecond. The same for the Chinese generators.
In Australia any fasteners used in public works (even non-structural) have to be batch tested except Hilti SS anchors which have some internal audit. As a rule of thumb Chinese products are not entertained because there is no trust in their QA/QC. They may be selling bolts rated for 'x' nm but in reality they are probably working off another suppliers data.
I would look at putting at least 3 genuine on each wheel- that way you have half a chance!
In Australia any fasteners used in public works (even non-structural) have to be batch tested except Hilti SS anchors which have some internal audit. As a rule of thumb Chinese products are not entertained because there is no trust in their QA/QC. They may be selling bolts rated for 'x' nm but in reality they are probably working off another suppliers data.
I would look at putting at least 3 genuine on each wheel- that way you have half a chance!