"Jim Burns" wrote in message
news
Provides more weight, sticking the rubber directly to the road, thus
providing more traction. Most large tractor drive tires have fluid
(calcium
chloride solution) in them. Weight in the tires does not stress the
frame,
axels or transmissions as much as the same weight bolted to the wheels or
frame weights bolted onto the tractor frame. It also helps prevent "wheel
hopping" in loose sandy soil.

Kinda what I figgered!

Thanks!