I take it the Hirst supply of tank idlers has dried up?
Fork truck tyres are availible off the shelf, or at least they were when I was looking for replacements for the trailer about 6 months ago.
Sadly for me they seem not to make the size I wanted for pressing on, however for opening up and bolting/welding on in the time honoured fashion they would be suitable. The finish goes from smooth to the lego tread type, and a range of colours.
I expect they would be a cheaper option than making rings and having the rubber custon made by the likes of Reliant.
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