I got a little high tonight.....

roughidle said
Your definately going to want to use pneumatic wheels and tires then....This type of caster wouldn't even think about turning on soft or uneven ground...
Click to expand...

I was thinking about these.

http://www.harborfreight.com/8-inch-solid-rubber-tire-42427.html


Description
Great for dollies, carts and other applications, this rubber tire is constructed of puncture-proof solid rubber! Features include a durable steel hub and ball bearings to withstand rigorous use. The grooved pattern tread allows a smooth, solid grip along the warehouse or workshop floor while hauling heavy loads.

Wheel Diameter: 8" Width: 2-1/2" Axle bore: 5/8" Capacity: 300 lbs. Shipping Weight: 6.00 lbs.