I have a New Holland 1925 tractor. I bought it used and it came with turf tires. While they have been "OK" for use on my very sandy soil, they do slip a lot. I began looking for some new tires and rims and found a new set of "take off" R4 tires that will fit on my tractor. However, they are $1150. A friend told me that these R4 tires would dig into the sandy soil just as fast as the turf tires, and suggested I just fill the back tires of the tractor with water. He said this would give me the traction I need without spending a bunch of money (which I don't have an abundance of). What are the general thoughts on this? Is there anything I should add to the water to inhibit corrosion? Should I bite the bullet and buy the new tires? (By the way, a new set of R1 tires/rims for my tractor would be about $1550). Thanks.