I put much time and research into it if I fill them it will definitely be beat juice. I was just more concerned with if anyone noticed a substantial improvement of performance of the tractor with the added weight. Like snowplowing loader work that sort of thing. My tractor performs well now just was wondering if it was worth the hassle of having liquid in the tires. All the other tractors I've had that I've added liquid ballast I was 100% sure I needed it when I did it. And then noticed a huge improvement in performance afterward. With this tractor I'm not so sure, it performs well without it but I just can't help thinking how much better could it be with the added weight.