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:

Customer Assistance Office
Chevrolet encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail Chevrolet, the letter should be addressed to: United States and Puerto Rico Chevrolet Motor Division Chevrolet Customer Assistance Center P.O. Box 33170 Detroit, MI 4 ...

Hood Adjustment
Hood Adjustment Callout Component Name 1 Hood Caution: Refer to Fastener Caution. Procedure Loosen the 4 hood hinge nuts. Adjust the hood in order to obtain an even gap on both sides between ...

Front Side Door Window Outer Sealing Strip Replacement
Front Side Door Window Outer Sealing Strip Replacement Callout Component Name 1 Front Side Door Window Outer Sealing Strip Procedure Do Not remove the outside rearview mirror. Use the appropriate tool, lift th ...

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