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Liquid Ballasting Know-How and Procedure

Fri, 16 May 2025 | PRODUCTS

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For generations, farmers have relied on clever, time-tested techniques to boost the performance of their machinery—and liquid ballasting is one of those age-old practices that has truly stood the test of time. Long before the rise of high-tech farming equipment, when most agricultural tyres were built with traditional bias-ply construction, the use of calcium chloride as a liquid ballast was a common and trusted solution. The goal was simple yet effective: increase traction and improve stability by adding weight where it mattered most—directly to the tyres.

This added mass helped tractors dig in better on loose or muddy ground, minimised wheel slip, and ultimately translated to better fuel efficiency and more productive fieldwork. Back then, traction wasn’t just about horsepower—it was about weight distribution. And liquid ballasting provided a reliable, cost-effective tyre care way to enhance grip without overloading the frame or relying solely on metal weights.

Even today, in the era of advanced radial tyres and precision agriculture, the principle behind liquid ballasting remains relevant. It's a smart blend of physics and farming know-how—proving once again that sometimes, the best innovations are the ones that have been around the longest. 

Modern agricultural tyres, like the Vardhan range from CEAT Specialty, are engineered with robust radial construction to deliver high grip and stability—even when liquid ballast is added. This makes them ideal for demanding fieldwork where extra traction or counterbalancing weight is needed.

Liquid Ballasting

Now that tractors run with radial tyres, liquid ballasting is not that common anymore. But sometimes, you may benefit from this good old practice. Sometimes, the machine needs extra weight to improve traction in severe conditions or to reduce tractor tyre slippage. When adding weight, it is necessary to lower the centre of gravity at the same time to ensure stability.

Benefits to tyres

Adding tyre fluids helps in gaining more traction weight and an increased counterbalance. Liquid ballasting can also help you reduce uneven tread wear for silage harvester machines on the rear position during road transfers.

Traction weight

How much of the tyres volume can be filled with liquid?

When using liquid ballast in tractor or implement tyres, you can typically fill up to 75% of the tyre's total volume with liquid. This allows enough space at the top for air, which is crucial for maintaining proper cushioning and tyre flex during operation. The air pocket helps absorb shocks and prevents the ride from becoming too stiff—something that could damage the tyre or affect operator comfort.

However, the exact amount can vary depending on the terrain and specific farming application. On extremely heavy or compact terrain, where extra traction is less of a concern, you might opt for a lower fill percentage—closer to 40–60%. This helps balance the need for weight without compromising maneuverability or putting too much strain on the tractor's axles and components.

In short, the fill level should match your ground conditions and load demands. While 75% is often the upper limit, a customised approach based on your field realities will always give you the best performance and efficiency.

Volume

What about the liquids? Are there some special liquids for this purpose?

No, the most common options are the simple ones. 

Like water? 

Water alone is not good. In fact, it is a big no in areas where the temperature may get below zero. Water freezes easily. So, there’s a risk of ice blocks forming inside the tyre or even pushing the tyre off the rim.

Water

But mix it with 80% calcium chloride or 47% magnesium chloride, which are salt mixtures, and there you have a frost-resistant fluid. These solutions lower the freezing point and do not damage the tyre.

Resistant Fluids

Many farmers use calcium chloride ballast because that’s what their dad used. Just make sure that you always pour the water into the calcium chloride. Never vice versa.

Calcium Chloride

And you must have rust-resistant pressure gauges to obtain accurate readings.

Rust Resistant

Sure, any other options for the liquid?

Antifreezes are glycol-based if there’s a danger that the temperature may fall below zero. Why not also use windshield wash? It’s cheap and non-corrosive. But toxic, of course.

Glycol

This is the reason why ballast liquid should never be disposed of in the sea without proper treatment since it’s harmful to the marine environment.

Disposed

Hmmm, ballasting seems quite exhausting!

Yes, it may seem so at first. But it will help you once you get a hang of it.

Important Checkpoints

  • Liquid ballasting increases traction, lowers the centre of gravity and reduces slipping

  • Suitable Liquids: Water + Calcium Chloride, Antifreezes, Windshield Wash Fluids

  • Never use plain water in cold climates

  • Check the liquid ballast chart for your tyre size

Checkpoints