I agree the bearings should be taken apart and inspected, NOT at 8,000 miles tho.
I have packed MANY wheel bearings in my time. I was skeptical about this system until I read WHY there are failures and how to PROPERLY service these bearings.
The good part of this system is that the grease has somewhere to go, that is right out the end of the hub where the grease is inserted. The "BUDDY" bearings like on boat trailers can be over greased easily and I will only hand pack that type.
__________________
|