Wheel weights and fluid filled tires is not a substitute for the counterbalance on the three-point hitch when doing heavy loader work. Without the weight, extending past the rear axle the front axle, which is the weakest axle is carrying most of the weight. To get the weight to transfer to the rear axle you need to add counterweights on the three-point arms.
If you are trying to improve traction the fluid and wheel weights will increase the traction in addition to adding to the stability of the tractor. In most cases, the weights help to lower the center of gravity. The lower the center of gravity, the more stable you are in most situations.
I was using a Massey Ferguson 1528 with a two drum hay cutter. With the hay cutter lifted, as when you are making a turn, the left wheel became very light. I ended up putting on two sets of rear wheel weights, as well as fluid in the tires. This solved the lifting problem very nicely. The problem came later when the rear axle housing cracked on the passenger side. This occurred years after I stopped using the tractor to mow with. Therefore, I can’t contribute the damage to the mower hanging off to the right side, but there is that possibility.
The stability and the traction were greatly improved. And that tractor had the industrial tires on it.