Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: Scrub Radius Description

Chevrolet Sonic Repair Manual / Chassis / Wheels/Tires / Wheels / Scrub Radius Description

Ideally, the scrub radius is as small as possible. Normally, the SAI angle and the centerline of the tire and the wheel intersect below the road surface, causing a positive scrub radius. With struts, the SAI angle is much larger than the long arm/short arm type of suspension. This allows the SAI angle to intersect the camber angle above the road surface, forming a negative scrub radius. The smaller the scrub radius, the better the directional stability. Installing aftermarket wheels that have additional offset will dramatically increase the scrub radius. The newly installed wheels may cause the centerline of the tires to move further away from the spindle. This will increase the scrub radius.

A large amount of scrub radius can cause severe shimmy after hitting a bump. Four-wheel drive vehicles with large tires use a steering damper to compensate for an increased scrub radius. Scrub radius is not directly measurable by the conventional methods. Scrub radius is projected geometrically by engineers during the design phase of the suspension.

Replacement Wheels Description
Replace the wheel if any of the following conditions exist: The wheel exhibits excessive runout. The wheel is bent. The wheel is cracked. The wheel is severely rusted. The wheel is severe ...

Spare Tire Kit Installation
Installation Instructions Part Number 95280943 Procedure ...

Other materials:

Washer Fluid
Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Engine Compartment Overview  for reservoir location. Caution . Do not use engine coolant (antifreeze) in the windshield washer. It can damage the windshield washer system and paint. . Do not mi ...

Vehicle, Engine and Transmission ID and VIN Location, Derivative and Usage
The vehicle identification number (VIN) plate is the legal identifier of the vehicle. The VIN plate is located on the upper left corner of the instrument panel (I/P) and can be seen through the windshield from the outside of the vehicle: Vehicle, Engine and Transmission ID and VIN Loca ...

Fuel System Description
Fuel System Overview The fuel system is an electronic returnless on-demand design. A returnless fuel system reduces the internal temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank. Reducing the internal temperature of the fuel tank results in lo ...

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