I spent two years with some new tires that leaked, slowly at first but increasingly as time went on, finally refilling them every two days. A local mechanic tried scrubbing the rims thoroughly and re-mounting the tires. That helped for a while, but eventually all of them leaked enough that I had to recheck them too often.
Is there any downside to the use of a sealing compound between tire and rim? I have in mind a rubber-like automotive weatherstrip cement that works to hold together my rubber sandals now and then.
Is there a better solution, short of new rims and tires?
Ben