Redcows, thanks for that. Have a good dealer here who carries Belen. Did yours have the cross braces? TC, am not too comfortable about galvanized troughs draining, loading on a light duty trailer and repositioning. They don't seem to take bumps and dings well. I may be wrong. I have hesitations about mounting on skids, although I do a mineral trough that way, because I haven't figured out how to mount the trough to the skids without drilling through the trough. RDFF, not comfortable with the steel bottom seal to the tire. Probably works great for you, but I'm sure I would mess it up! My permanent tire tanks have not been as bullet-proof as most seem to be. Plan to drain and move these troughs regularly. Thanks for all the suggestions.
If you use a good sealant, I don't think it should be a problem at all. If you're concerned, get yourself some of what they use to install windshields... it won't leak, and you'll have to cut that sealant if you ever want to take that bottom off again. Then make a little trailer specifically to put the tire on, and put a drain through the steel bottom to drain it fast, so you can just pull it to where you need it real easy with a 4 wheeler. Make your wheels on an eccentric with a hand crank jack (like an icehouse does), so you can just lift the tank up off the ground to pull it.
Not sure of where you're located... ya know what an ice house is?
If you've had some issues with a tire tank leaking
because of the concrete sealing to the tire, ...first question, did you POUR your concrete, or did you use dry sackrete and then just cover it with water? I honestly think that the dry might be better to get a seal... but not sure. If you POURED it, did you work the concrete in underneath the bead and kind of "vibrate" it some (even just working it well with a shovel into all the spaces under the tire and around the bead and the pipe(s) coming in)? If you didn't, you could easily end up with voids. If you DID do it with dry sackrete, did you thoroughly
TAMP that sackrete in underneath the bead of the tire AND all across the whole bottom and around any pipes coming up through, so you're sure there are no voids, or lack of concrete density (not fluffy)? If you didn't, that's probably why you ended up with a poor seal. If you do it that way, it should seal up just fine, but if you just dumped it in and covered it with water, I could pretty much guarantee it'll leak. However, if the concrete IS the problem, try draining the tank, then cover the bottom with another couple of inches of TAMPED sackrete, and GENTLY (so as not to disturb the concrete powder) put water in it about 4-5" over the new concrete, and let cure for a day or so, then fill it up. It should seal it up just fine. In lieu of that, break the concrete out and start over.