How much does a tractor tire weigh? Weights can vary a lot. Some weigh a few hundred pounds, while others go way over one ton. This guide talks about factors that affect how much a tractor tire weighs. We’ll cover tire size, build type, and even the heavy liquid ballast added inside the tires, so you know exactly what you’re dealing with.
What Affects Tractor Tire Weight?
Lots of people believe a heavier tractor tire is always better in quality. That’s not true at all. A tire’s weight depends more on what it is built for instead of how good it is. A tire made to carry huge loads will naturally weigh more than a tire for a small compact tractor, even when both have about the same diameter. Extra weight comes from the extra materials used to make the tire strong, tough and built for certain jobs.
- Size and Dimensions: Taller and wider tires need more rubber and extra internal layers, so they weigh more.
- Construction Type (Bias-Ply vs. Radial): Bias‑ply tires have lots of crisscross fabric layers. They have thick, tough sidewalls, but they tend to be heavier and stiffer. Radial tires have fabric layers running straight across plus belts right under the tread. With this setup, the tire can be strong yet lighter while carrying the same weight.
- Tread and Casing: The tread is the thickest part of the tire and makes up a big chunk of the total weight. The inner casing, belts and stiff bead that locks the tire onto the rim all add extra pounds too.
- Ply Rating/Load Index: A higher ply rating means the tire can take heavier loads and higher air pressure. Manufacturers add more or stronger materials inside the casing, and that makes the tire heavier.
- The Wheel: We usually see the tire and rim as one piece, but steel or aluminum rims themselves add a lot of weight to the whole assembly.
- Ballast: Many farmers fill tractor tires with liquid for better grip and stability. This liquid can add hundreds of pounds to a single tire.
Now that you know what changes tire weight, let’s stop talking about the reasons and look at real‑world weight numbers.
How Heavy is a Tractor Tire?
To get a real sense of how heavy a tractor tire is, it helps to break them down by class. The weight we discuss in this section is the “dry weight”—the tire by itself, without the wheel or any liquid ballast.
Small to Mid-Size Farm Tractor Tires
Small and mid‑size farm tractor tires fit compact and utility tractors you often see on small farms or private land. They are easier to handle than huge tractor tires, but still really heavy.
A common rear tire for small‑to‑mid‑size tractors, like the popular 18.4‑38 model, usually weighs anywhere from 250 to 500 pounds. Just to give you an idea, a regular car tire only weighs around 25 pounds. Even the smaller tractor tires are far heavier by comparison. As an example, a brand‑new 18.4‑38 bias‑ply tire weighs roughly 350 pounds straight out of the box.
Large Agricultural and Heavy-Duty Tractor Tires
Once we get into the large row-crop and 4WD tractors used for commercial agriculture, the weights climb rapidly. The tires on these machines are designed for massive loads and maximum flotation to minimize soil compaction. A large radial rear tire, such as a 710/70R42, can weigh 800 pounds or more by itself. Tires in this category that are designed for extra-large applications can easily surpass 1,000 pounds before ever being mounted on a wheel.
Extreme Industrial and Mining Tires
To put things in perspective, it’s worth looking at the absolute giants of the tire world. The tires used on massive front-end loaders in mining operations are almost unbelievable in scale. For example, the Firestone 70/70-57 SRG DT tire, designed for the LeTourneau L-2350 loader, weighs approximately 15,000 pounds (6,800 kg). This is just for the rubber tire itself, demonstrating the extreme end of the weight spectrum.
How Much Does a Tractor Tire and Wheel Weigh?
The dry tire weight is only part of the story. To get the full picture, you must add the weight of the wheel it’s mounted on. Tractor wheels are made of thick steel to handle extreme forces and are a major contributor to the total weight.
- A steel wheel for a mid-size rear tractor tire can add another 150 to 400 pounds to the assembly. So, a 400-pound tire mounted on a 200-pound wheel already weighs 600 pounds before you even consider adding ballast.
- For larger equipment, the numbers are even more impressive. A complete wheel and tire assembly for a large John Deere tractor, like an 1100/45R46 combo, can weigh around 1,933 pounds per wheel. This is the weight you’re dealing with when changing a tire on a large piece of farm machinery, which is why specialized lifts and safety procedures are not just recommended—they are essential.
Here’s a simple chart to visualize how the weight builds up for a typical large rear farm tire:
| Component | Example Weight Range |
|---|---|
| Rear Tire (Dry) | 350 – 800 lbs |
| Steel Wheel (Rim) | 150 – 400 lbs |
| Total Dry Assembly | 500 – 1,200 lbs |
As you can see, the combined weight is substantial. But we still haven’t added the heaviest component of all: liquid ballast.
The Effect of Liquid Ballast on Weight
Adding extra weight to your tractor really helps boost traction and keeps the machine stable. This matters a lot when you use heavy front attachments such as a loader. Instead of bolting on cast‑iron weights, most people fill their rear tires with liquid ballast. It brings the tractor’s center of gravity lower and greatly improves pulling power.
One key thing to remember: tires are never completely full of liquid. Around 25% of the space stays filled with air. That air lets the tire flex and soak up bumps when you drive. The kind of liquid you pick makes a big difference to how much the tire weighs.
Water
It costs the least. It weighs roughly 8.3 pounds per gallon. The big problem is water freezes easily. Ice forms hard chunks inside the tire, making your ride bumpy. When ice expands, it can even push the tire away from the rim. Water only works in areas where temperatures never drop below freezing.
Calcium Chloride
A choice for cold weather for many years. This salt mixture won’t freeze until it hits ‑50°F or colder. It is heavy too, at about 11 pounds per gallon. The main catch is that it causes heavy corrosion. A leak will quickly rust steel rims, and it is poisonous to plants and animals.
Antifreeze (Propylene Glycol)
Propylene glycol antifreeze, mixed with water, is widely used these days. Unlike old ethylene glycol antifreeze, this version is non‑toxic. It protects against freezing down to roughly ‑40°F. However, it does not add any extra weight compared with plain water.
Beet Juice Ballast
A popular eco‑friendly option. It will not corrode your rims, breaks down naturally, and works very well in freezing conditions. It matches calcium chloride for weight without the rust risk.
Polyurethane Foam
Or foam fill gets rid of flat tires for good. It replaces air and liquid with a firm yet bendable solid polymer. It adds plenty of weight, usually more than water. The big disadvantage is you cannot reverse it. Once foam is inside, the tire cannot be patched. When it wears out, you have to cut the tire off the rim, which takes extra time and money. Let’s use real numbers with a 13.6‑28 tire. People fill it to 75% capacity, which holds around 43 gallons of liquid.
- If you use water: 43 gallons × 8.3 pounds per gallon adds about 357 pounds.
- If you use calcium chloride or beet juice: 43 gallons × 11 pounds per gallon adds roughly 473 pounds.
The tire and rim already weigh over 500 pounds with no liquid. Once you add the ballast, one single rear tractor tire can easily go over 1,000 pounds.
Summing Up
So just how heavy is a tractor tire? As we’ve gone over, weights change a lot. A smaller tire without any liquid ballast starts at about 250 pounds, while a big tire with liquid ballast on its rim can reach almost 2,000 pounds. It’s really important to know these weights so you can handle and maintain your tractor safely. Whether you’re swapping out an old worn tire or upgrading your setup, knowing what each part does helps a lot. If you need replacement parts, FridayParts is here to help you get what you want.
