There are a few reasons why you might need to buy new lawn mower wheels. Firstly, the wheels on your lawn mower can wear down over time due to regular use and exposure to the elements, which can cause them to become smooth or uneven. This can make it difficult to maneuver your mower or cause it to slip on uneven terrain. Secondly, the wheels may become damaged due to hitting obstacles or running over sharp objects, such as rocks or sticks. This can cause cracks, bends, or other types of damage that can affect the performance of your mower. Finally, if you have an older mower, the wheels may be outdated or no longer available, making it necessary to purchase new ones to keep your mower running. Regardless of the reason, replacing your lawn mower wheels can help to improve the performance and safety of your mower, as well as extend its lifespan.