Wheel weights are placed directly on the wheel to ensure proper balance of the tire and wheel assembly, preventing vibrations and promoting even tire wear. These small, often rectangular metal tabs are fitted to either the inside or the outside of a wheel, with their specific placement depending on the vehicle type and wheel design.
Understanding Wheel Weight Placement
The primary purpose of fitting wheel weights is to counteract any imbalances in the tire and wheel unit. Without proper balancing, a wheel might wobble or vibrate at certain speeds, leading to an uncomfortable ride and premature wear on tires and suspension components.
The method and location of fitting wheel weights vary, primarily based on the type of wheel and the aesthetic preference:
- Inside the Wheel: Often preferred for alloy wheels on modern vehicles, weights are placed on the inner barrel of the wheel, making them less visible from the outside.
- Outside the Wheel: Commonly found on steel wheels or older vehicle models, weights might be visible on the outer rim flange.
Common Types and Fitting Methods
There are two main types of wheel weights, each with a distinct fitting method:
| Weight Type | Placement Area | Fitting Method | Common Use Case |
|---|---|---|---|
| Clip-on Weights | Outer rim flange | Hammered onto the rim's edge, clamping securely | Steel wheels, older vehicles, utility vehicles |
| Adhesive (Stick-on) Weights | Inner wheel barrel | Peeled and adhered using strong double-sided tape | Alloy wheels, modern vehicles, performance cars |
Clip-on Weights
These weights typically have a spring clip designed to grip the rim flange. During the wheel balancing process, the technician identifies the light spot on the wheel-tire assembly and then selects the appropriate weight. The clip-on weight is then hammered onto the edge of the rim, securing it in place. While effective and durable, they are often visible and can scratch the rim if not fitted or removed carefully.
Adhesive (Stick-on) Weights
Adhesive weights are strips of small, individual weights with a strong adhesive backing. They are designed to be applied to the inner surface of the wheel, out of sight. This method is popular for alloy wheels as it maintains their aesthetic appeal and prevents damage to the finish. The technician cleans the inner barrel surface, peels off the backing, and presses the weight firmly onto the designated area.
The Balancing Process
Regardless of the fitting method, the process begins with placing the tire and wheel assembly on a wheel balancing machine. This machine spins the wheel and identifies any heavy or light spots, indicating where weight needs to be added and how much. The technician then applies the necessary weights to the precise locations to achieve a perfectly balanced wheel.
