I've got a set coming for my rig (getting front, too). Three of the extenders that came with the rig failed (2014 Solera 24S). The tire pressure monitoring system saved me by telling me the tire(s) were low. Pulled the extenders off and I'm getting these metal valves installed a.s.a.p.
and catpanions, Purrl & Lucy Lu
2014 Solera 24S