What is the practical limit to Miata hubs?

In reply to Keith Tanner :

Hmm, SADfab doesn't seem to be doing much so I'm looking at the v8roadster rear billet hubs.

https://v8roadsters.com/product/v8r-na-nb-billet-rear-hub/

That's what I run on my own car, but that's because I have V8 axles too :) 

Back to my original question - how long do they need to last? Is this going to be a track car, an occasional autocrosser or a Challenge lark? Because I'd give different answers for each one. The fronts are the ones to worry about. The failure mode on the rears is dramatic at speed but it's the fronts that are far more likely to fail.

In reply to Keith Tanner :

The one I linked is a pre-order for their new rear hubs that go on na/nb axles unless I'm misunderstanding.

I'd prefer neither of my wheels to go sliding past me on track if I'm honest!

Same hub that we've been using on V8 cars for years, just a different spline. 

Keith Tanner said:

The Wilwood hubs are a “trailer style” design - their longevity is going to be directly related to accurate and frequent adjustment. FYI. 

There is a company in Australia that makes spacer shims so that the spindle nut can be torqued to a setting for the RX cars that use that type of bearing (basically everything pre-FD) and it is supposed to alleviate that issue.

That's so obvious it's surprising that neither Mazda nor Wilwood incorporated it.

I find myself explaining stress risers at sharp transitions several times a month at work.   

Well, I didn't want to blow all of my car money on hubs so I'm giving the Wilwood a go. They say to adjust/inspect every 20 track hours and the bearings are easily replaceable track side, not a bad deal really. I'll report back. Sorry for the thread jack, though it's mostly relevant to the OP topic. 

The old adjustable tapered bearings are very rugged and dependable. If the bearing needs adjustment it wasn't adjusted properly previously or the bearing is wearing/worn out.  More important is effective seals to keep out dirt and sand. 

Small tangent update again - I've ordered/mostly installed the wilwood hubs. Easy install, working on the "accurate" adjustment part now. They are BEEFY though, just look at them compared to stock hubs.

https://grassrootsmotorsports.com/forum/grm/help-adjusting-wilwood-miata-nanb-adjustable-front/159837/page1/#post2838415