On Nov 29, 10:45*pm, Nahmie wrote:

Wild guess here - Could it have anything to do with pipeline work? I
see a lot of trucks like this in the East Texas area, several right
here in the RV park we stay in, and these guys are doing gas/oil
pipeliune construction. Still don't know what that big ring is for,
but just thought I might throw in an alternative employment for the
vehicle.-

Show this picture to one of the guys with a truck like this, and ask
him what the ring is for!

--riverman