Is it better to have larger or smaller tractor wheels?

Large tires
Large tires are generally more suitable for tractors than small tires because they provide better maneuverability and work quality. This conclusion is based on the following points:12

Maneuverability and control: The guide wheels of large tires can improve maneuverability, making the tractor more flexible and easier to control when working in the field.
Carrying capacity and traction: Large tires can increase the width of the tires, thereby improving passability and carrying capacity. This is especially important when it is necessary to handle heavy agricultural machinery such as large tractors and harvesters.
Fuel efficiency and soil protection: Large tires can reduce the slip rate, thereby reducing fuel consumption, while improving suspension performance and avoiding soil compaction.
Safety: Wide tires are less likely to roll over, which improves the safety of tractors when operating in complex terrain such as hills and mountains.
However, it should be noted that although large tires have many advantages, they also increase noise and resistance, which may affect the overall performance and efficiency of the tractor to a certain extent. Therefore, when choosing tires, factors such as operating requirements, terrain conditions and economy should be considered comprehensively.