Someone once said that trying to take a tire off of a little lawn tractor wheel is like pulling teeth....through the anus. I think they are right.
So what's the trick? I can easily break the bead but getting the bead off is a task. I thought my tire changer would do it but then I found that the 4" tire is too small and the tire changer can't grab it. Doh!!!!
Then I see this tool from Notherntool.com for small wheels but then it says you need a minimum of 5cm hole in the wheel! That's quite a large hole for a small wheel. Then they have another tool for like $400!
So what is the trick? Just use multiple tire irons and soap and water? I messed with it for half an hour - I'll try more tomorow. The key here is how to do without damaging the wheel.