Thanks guys, I never thought of Harbor Freight, I'll check them out and am attaching a photo of the tire which doesn't seem to offer any help as to the dimensions. Also, the reason that I need to replace the tires is that they lose air quickly and if I don't use it for a couple of months, all the air is gone and it's a hassle to fill them up again so I don't know if that is typical (what to expect) with new tires or should I look into the more expensive are no flat tires?
Thank you for your help guys
Bob[/QUOTE
The reason the tires don't stay aired up is those are tubeless style rims. easy fix is to pick up 2 inner tubes for that size wheel ( hf has them ) break the bead on one side , remove the valve stem from the rim , insert the inner tube into the tire , slip the tube valve stem through the wheel hole and air up. I have done this to all my dollies ( I work in the moving and storage industry )