RHP-5 Multi-Piece Wheel Dangerous?

[studda]

I looked at my 1 1/2 ton wheels and I noticed at least one one has the raised center section. It does appear to have a lock ring on the other side of the wheel though. It appears to be an RHP-5. Are they to be avoided like the RH-5 "widowmaker" wheels or is it just the true split wheels without lock rings? The rear wheel looks the same on the reverse as the front wheel pictured. This is the only one I noticed on the truck with the raised center section.

Here's a link to the various wheels as seen at stovebolt:
http://www.stovebolt.com/techtips/wh...dd_catalog.jpg