What is the function of balance weights?

[ClaytonMarie]

Balance weights serve the following purposes: 1. Maintain dynamic balance of wheels during high-speed rotation; 2. Extend tire service life and ensure normal vehicle performance; 3. Reduce wear on vehicle suspension systems; 4. Minimize component wear caused by wheel imbalance during driving. Balance weights, also known as tire balance weights, are counterweight components installed on wheels. They reduce vibration amplitude during high-speed rotation by minimizing mass differences between tires. The installation method of balance weights depends on wheel hub material: 1. For steel hubs, simply hammer the weights directly onto the rim; 2. For aluminum alloy hubs, double-sided adhesive tape is required for attachment.

[PresleyFitz]

Balance weights are crucial in cars, as I've deeply realized from over 20 years of driving. They are those small lead blocks attached to the wheel rims, specifically designed to address wheel rotation vibration issues. New cars undergo dynamic balancing for each wheel upon leaving the factory, but uneven mass distribution may occur after tire replacement or rim impacts. Imagine your steering wheel shaking violently at 80 km/h—it's likely due to displaced or missing balance weights. These little things make tire rotation smoother, directly reducing chassis vibrations, especially noticeable during high-speed lane changes. Without them, tires would wear unevenly, potentially ruining a tire in just a few thousand kilometers. Last time my rim scraped a curb, the technician stuck four small weights during rebalancing, and the problem was instantly resolved.

[VanNolan]

I'm a car mechanic who deals with wheel balancing issues every day. Balance weights primarily address the dynamic balance of the wheel hub and tire assembly. Simply put, the equipment detects which side of the wheel is lighter, and then adds lead weights on the opposite side for counterbalance. The most noticeable effect is that the steering wheel doesn't shake and the car body doesn't wobble at high speeds. A common scenario is when customers drive at 100 km/h after changing tires without dynamic balancing, causing the entire driver's seat to vibrate. Our process is very standardized: first, mount the wheel on the machine and spin it, use infrared to mark the imbalance points, then apply adhesive balance weights of different gram weights. Note that many alloy wheels now use adhesive types, which are more durable than the old clip-on types and won't scratch the wheel hubs. Finally, it's recommended to check the balance weights every two tire changes.