So I played with the car a bit this weekend, and found my rear driver wheel bearing to be sloppy again. For recollection: that wheel bearing catastrophically failed on my first track day of the year this year. I replaced the entire hub since the race was chewed up.

Now, this was just a random hub with a "fairly new bearing" in it. My first question to you fine folks is this:

Is there any reason or way for premature wheel bearing failures on the same corner with different hubs?

My second question is:

Can I upgrade to the newer cartridge style bearings with my current axles and suspension pieces? What needs to change if not?