Chevrolet Sonic Repair Manual: Tire and Wheel Balancing (Road Force Variation (RFV))

Chevrolet Sonic Repair Manual / Chassis / Wheels/Tires / Wheels / Tire and Wheel Balancing (Road Force Variation (RFV))

ALL wheel/tire assemblies must have a RFV within spec before being mounted on vehicle.

Important:

If a wheel/tire assembly is not within the RFV specification after match mounting, the tire must be returned to the tire manufacturer. DO NOT install tire/wheel assembly on a vehicle if it exceeds the RFV specification.

RFV is unrelated to tire balance.
RFV is identifying the stiff portion of the tire and determining if it is within spec.
If RFV is too high, it will result in a vibration condition.
Do not attempt to measure RFV on tires that have temporary flat spots. If necessary, drive the vehicle to relieve the flat spots.
Prior to measuring for RFV, the tires must be inflated to the specification on the label.

Passenger Cars (including Crossover Vehicles) = 18 lbs.
Truck Tires: (P) - metric = 24 lbs.
(LT) - metric = 35 lbs.

It is recommended that RFV measurements are made prior to installation of balance weights. Once adequate road force levels have been achieved, move on to balance the assembly.

Tire and Wheel Balancing (Collet Cone Selection)

Important: Never use the hub cap bore to center the wheel onto the balancer. The pilot bore (on the hub side of the wheel) is machined to be concentric to very tight non - standard tole ...

Tire and Wheel Balancing (Wheel Pilot Bore Greasing)

Beginning with MY 2011 vehicle, pilot bore grease should be applied. To enable this, grease must be applied to the pilot bore to prevent the wheel from seizing onto the hub. Refer to Adhesi ...

Other materials:

Fog Lamps
For vehicles with front fog lamps, the button is on the outboard side of the instrument panel. The ignition must be on to turn on the fog lamps. (Fog Lamps): Press to turn the fog lamps on or off. An indicator light on the instrument cluster comes on when the fog lamps are on. The fog la ...

Instrument Panel Outer Trim Cover Replacement
Instrument Panel Outer Trim Cover Replacement Callout Component Name 1 Instrument Panel Outer Trim Cover (Qty:?€‰2) Procedures Use a flat bladed plastic trim tool in order to disengage the retainers securi ...

Drive Belt Tensioner Replacement
Special Tools EN-955 Locking Pin EN-48488 Holding Wrench For equivalent regional tools, refer to Special Tools. Removal Procedure Remove the right front wheelhouse liner extension. Refer to Front Wheelhouse Liner Inner Front Extension Replacement Install the engine su ...

0.0062