Which of the following should you avoid when riding with a passenger?

When considering the safety of riding with a passenger, it is crucial to ensure that you do not exceed the weight limits of your motorcycle. Each motorcycle is designed with specific weight limits that include both the rider and any additional passenger. Exceeding these limits can affect the motorcycle's handling and braking capabilities, which can lead to dangerous situations such as loss of control or difficulty in stopping effectively. Maintaining proper weight load is essential for safe riding, and adhering to this guideline ensures better stability and performance.

While other factors such as wearing proper gear and riding at high speeds also contribute to overall safety, they do not specifically relate to the issue of weight limits in the same direct manner as exceeding the weight can impact the motorcycle's function and safety. Therefore, recognizing the importance of weight limits is central to ensuring safety when riding with a passenger.