Thought I would throw my 2 cents in -

In my OTHER life of offroading with the Jeep club, we use tend to find cheaper alternatives.

In our 33" mud tires we use Air Soft BB's. About 10oz in each tire. These are significantly bigger, so I'm not sure if it's even a possibility to get them in a tubed tire.

They work great, re balance everytime you speed up.

http://www.facebook.com/media/set/?set=a.20060664220.30056.512209220&type=1&l=1e6052a294

That album link should be viewable to all.

Mark

1949 Canadian Built Chevy 1434 (3804 US equivalent)
In the Stovebolt Gallery

1949Chevy.com - Photo blog describing the teardown and restoration

AD Radio Rebuild