guys, I checked the tire (pumped it up and used some soapy water to find the leak) and turns out that it is basically porous (is that an English word?), anyway, lots of small leaks through cracks. Therefore the fix-a-flat may not work.

So I want to use an inner tube but I cannot get the tire of the rim.....anyone suggestions how to? the local tire guy was hesitant to try to get it off since he thinks his machine will damage the plastic rim.

Thanks, Doekie