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:

Rear Seat Outboard Seat Back Airbag Replacement
Rear Seat Outboard Seat Back Airbag Replacement Callout Component Name Warning: Following the deployment of a rear seat side air bag, inspect the following parts for damage. Replace these parts if necessary: ...

Transmission Replacement (With 1.6L or 1.8L Engine)
Removal Procedure Remove the battery tray. Refer to Battery Tray Replacement. Without draining the coolant or removing the hoses, remove and position aside the radiator surge tank. Refer to Radiator Surge Tank Replacement. Remove the transmission range selector lever cabl ...

Manual Transmission Shift Lever and Selector Lever Cable Replacement
Removal Procedure Remove the battery tray. Refer to Battery Tray Replacement. \i Disconnect the shift lever and selector cable ends (1) from the transmission shift lever and selector levers. Pull the cable retainers (2) to release the shift leve ...

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