Chevrolet Sonic Repair Manual: Tires and Wheels Description and Operation (Tire Identification)

Chevrolet Sonic Repair Manual / Chassis / Wheels/Tires / Wheels / Tires and Wheels Description and Operation (Tire Identification)

Identification

Accessory and warranty replacement must use TPC spec tires.
An outboard orientation stripe is added to the tread surface, with an offset toward the outboard tire face.
All GM approved tires (Production, Service and Accessory) have a TPC (Tire Performance Criteria) code.
A replacement tire that lacks the original TPC code will not meet the performance characteristics of the original tire, even if it is the same brand, model and size.

Force and Moment
Residual Aligning Torque (RAT)
Rolling Resistance
Braking Traction
Driving Traction
Uniformity
Noise
Dimensions
Mass
Rev/KM
High Speed
Air Retention
Electrical Resistance
Automatic Mounting
Endurance (ATE)
Treadwear
Chip/tear
Groove Wander
Ride and Handling
Wet/Snow Handling

The TPC system facilitates tire replacement for GM customers on GM vehicle, meeting the same critical performance specifications of GM vehicle original equipment tires.

Tires and Wheels Description and Operation (Equipment)

GM Recommended Tire Balancer Hunter RF33 Road Force balancer or equivalent with the following options: Auto Clamp – allows for centering repeatability and prevent damage to the ...

Toe Description

Toe is a measurement of how much the front and/or rear wheels are turned in or out from a straight-ahead position. When the wheels are turned in, toe is positive (+). When the wheels are ...

Other materials:

Valve Guide Reaming, and Valve and Seat Grinding
Valve Cleaning Procedure Use soft bristle wire brush to clean any carbon build-up from the valve head. DO NOT use a wire brush on any part of the valve stem. The valve stem is chrome plated to provide enhanced wear characteristics. Wire brushing the stem could remove the chr ...

Stabilizer Shaft Link Replacement
Stabilizer Shaft Link Replacement Callout Component Name Preliminary Procedure Raise and Support the vehicle. Refer to Lifting and Jacking the Vehicle. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal ...

Camshaft Replacement
Special Tools EN-422 Installer For equivalent regional tools, refer to Special Tools. Removal Procedure Note: Take extreme care to prevent any scratches, nicks or damage to the camshafts and caps bearing surfaces. Remove the timing belt rear cover ( ...

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