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:

Radiator Grille Opening Cover Replacement (Upper Grille Cover)
Radiator Grille Opening Cover Replacement Callout Component Name Preliminary Procedure Remove the radiator upper grille. Refer to Front Upper Grille Replacement. 1 Radiator Grille Opening Cover ( ...

Front Wheel Drive Shaft Inner Joint and Boot Replacement
Special Tools DT-35910 Drive Axle Boot Clamp Pliers For equivalent regional tools, refer to Special Tools. Disassemble Procedure Note: There are types of inner joints available. If the inner joint is connected with the CV style joint, the inner joint is not serviced separa ...

Lock Cylinder Coding - Ignition
The ignition lock cylinder uses 8 key cut positions, 1?E. The ignition cylinder tumblers (3) are located on alternate sides of the cylinder (5). They are not snap-in and are not self-retaining. It follows the key code with the first tumbler being the first depth of the ke ...

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