I had one of these finally go out on me this weekend. Has anyone had to replace a wheel on one of these lately? Any idea on a good deal?
I own two of those subs. My wheels are still intact. I guess I'd use something like this when and if the time comes.
http://www.starcase.com/3Grigidcasterdetail.html
Are you sure Yorkville won't replace these? free?
Take some measurements and visit Harbor Freight, Home Depot or Lowes.
I am going to add to what Stephen C said.
Take full measurments of wheel size, caster plate size, height, width etc. and contact either Grainger or McMaster Carr. They both have awesome websites that you can pretty much find anything on. & they are very reasonable with their prices.