why do tractors have big back wheels

Tractors have become an essential part of modern agriculture, and they come in different types with varying sizes. One of the distinct features of most tractors is their big back wheels. Have you ever wondered why these wheels are much more prominent than the front ones? In this article, we will explore the reasons behind this unique design of tractors' wheels.

The Purpose of Tractors Wheels

Before delving into the reasons why tractors have big back wheels, it's essential to understand the purpose of these wheels. Tractors are designed to perform various agricultural activities such as plowing, tilling, planting, and harvesting, all of which require the transmission of power and traction to the ground. Therefore, the primary function of tractor wheels is to help move the tractor efficiently and safely through rough and uneven terrain.

The Advantages of Big Back Wheels

The most significant reason why tractors have big back wheels is that they provide better overall traction on the ground than smaller wheels. The larger wheels distribute the weight of the tractor more evenly and hence exert less pressure on the soil than smaller wheels, making it easier to plant, till, and harvest crops. This is especially important when the soil is wet or muddy, as big wheels can move through without getting stuck, while smaller ones would struggle.Moreover, big back wheels enable tractors to carry heavy loads with ease. When a tractor carries heavy equipment, like plowing attachments or wagons, big wheels help distribute the load more evenly. This reduces the stress on smaller wheels, which if relied upon, could damage under the weight of the load, causing accidents or other problems.The large back wheels are also beneficial when the tractor needs to travel on uneven terrain, as they can better traverse through bumps and ditches without getting stuck or tipping over.

The Disadvantages of Big Back Wheels

While big back wheels have many advantages for tractors, there are also some downsides to this design. One of the main disadvantages is that they tend to make the tractor top-heavy, as the weight is concentrated in the back. This can cause stability issues when driving on a slope or when carrying a heavy load, making the tractor more prone to tipping over. It can also increase the turning radius of the tractor, making it less maneuverable.Another disadvantage of big back wheels is that they are typically more expensive to maintain and replace than smaller wheels. This is because of the increased material costs and the complexity of the design to handle heavy loads, making it more durable and long-lasting.

Conclusion

In conclusion, the big back wheels of tractors serve an essential purpose in the agriculture industry. While they do come with some disadvantages, the benefits outweigh the costs in most cases. These wheels help provide better traction, reduce soil pressure, carry heavy loads with ease, and improve the tractor's ability to move effectively through rough terrain. As the agriculture industry keeps evolving, the big back wheels of tractors remain crucial for the efficient and effective performance of farming.