Rim Guard is far and away the best way to add weight.
Its bio-degradable, non-toxic, non-corrosive, and won't freeze until @ -35*.
The only downside to it is it stinks to high heaven if you ever have a leak, and you MUST use metal valve stems.
As for cost, that's a grey area, as it seems some dealers want to rape people with the pricing. I've seen folks complain about high cost. In my case my local JD AG dealer charged me $2.30/Gal which included the installation cost.
As for "not needing weight in the summer"? Lots of people need it for traction on slopes when the grass is wet/damp. That extra weight is sometimes the difference between climbing the slope or spinning the tires and tearing up the turf.
The other important thing that fluid filling tires give is that it puts most of the added weight BELOW the axle, which aids in stability if you are on a slope.
Yeah, the tires weigh more when you mount/dismount them, but how often would you do that?
I've mounted a set of 26-12-12 tires with 110# of Rim Guard in each of them, and it wasn't all that big a job, even for me, a light in the butt old fart.
How many of you have tried to mount a 110# wheel weight? I have, and trust me, there was no way that I would have been able to do it without my trusty forklift.
Finally, with fluid filled tires you still have the option of adding MORE weight via wheel weights.
The advantages of fluid in the tires, especially Rim Guard, far outweigh any disadvantages.
Edited by OldBuzzard, January 05, 2014 - 03:31 AM.