Tires TC-40 with calcium/water filled rear tires

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Are you sure on that trailer?
Those look like single tires, single axles, which typically rate in the 6000/7000/8000 range (each so 12k, 14k,16k)
I've never seen a single tire axle rate for 10k, always takes duals.

What do the tires rate for?
What do the axles rate for?

Hello LoneCowboy, Yes they are four new replacement split rime single tires (7.50-15 14 PLY RATING DOT OD57 FLANG GUARD) on each axle. I find no tags on the axles indicating weight but the frame stamped Zieman chassis number starts with "2094" which may indicate GWVR. I will soon e-mail Zieman and clear this up-although in phone conversation with them a couple of years ago, they confirmed the 21,000 lbs GVWR.

 

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I received a ten page e-mail with all of the component specs from Zieman (now owned by Lippert Components, Inc) and the trailer has a 15,200 lb GVWR. I did also find out that the gooseneck, tool box and fender bumps were factory options added to this trailer. So with the TC-40, backhoe attachment and FEL, the GVW should be around 12,000 lbs.