We've had our 2013 ZF31BH for a little over a month and just brought it home from a month long stay at a site. At the site, I noticed a tire a bit low and figured it would be fine on the 15 mile ride home. Tonight I hooked up for our venture out tomorrow and went to fill it and the stem bent and I seen it had weathering crack and it began to hiss.....rotted. I went around to check the other three and they are the same way, but still holding air. Just an FYI to all to take a look at their valve stems for cracking.
Chinese rims and tires ...probably non uv ,cheap chinese rubber stems also...
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It was a rainy few days at Algonquin Prov park...tarps kept us dry.
Wayne --Belle River (Windsor), Ontario
2013 Sunset Trail Reserve 25RB..(just sold it)
2015 White Chev Silverado 2500HD 4x4 (6.0 l gasser)
2003 Mountain Star 890SBRX Truck Camper
X2 on the metal stems. Previous trailer had rotten stems and my usual tire guy talked me into replacing them. Not having to stop on an interstate somewhere to replace a tire was well worth the $25.