Quoted from Spiderpin:Don't do it. I did try it only because harbor freight was out of the stationary wheels. I changed the stock wheels to tires I could put air in. You'll have no control of cart if you need to go down a ramp. I thought it would be a good idea but I changed them as soon as I could. 360° tires on front and stationary on back.
Do you have any pics of your setup? I was wondering about changing to pneumatic tires