Tire Balance

Balance all four tires on the 2023 Chevrolet Bolt EUV to eliminate vibration and ensure even tire wear using a wheel balancing machine.

Warnings

Tools required

Parts

• Adhesive wheel weights × 1 — Use as needed based on balance measurements
• Clip-on wheel weights × 1 — Use as needed based on balance measurements

Preparation

1. Park vehicle on level ground and engage parking brake firmly
2. Place wheel chocks behind the rear wheels if lifting front, or front wheels if lifting rear
3. Loosen all wheel lug nuts approximately one turn before lifting vehicle
4. Verify wheel balancing machine is calibrated and functioning properly
5. Prepare workspace with adequate clearance for removing and mounting wheels

Procedure

1. 1

   Lift vehicle and remove wheels
   Using a floor jack, lift one corner of the vehicle at the designated jacking point near the wheel to be serviced. Place a jack stand under the vehicle frame rail for support. Repeat for remaining wheels as needed. Remove lug nuts completely and take off all four wheels. Inspect lug nuts and wheel mounting surfaces for damage or corrosion.
2. 2

   Clean wheel mounting surfaces
   Use a wire brush to clean the wheel hub mounting surface and the inner mounting surface of each wheel. Remove any rust, debris, or old adhesive weight residue. This ensures accurate balancing and proper wheel seating. Pay special attention to the wheel center bore and hub face contact area.
3. 3

   Remove existing wheel weights
   Inspect each wheel for existing balance weights on both the inner and outer rim surfaces. Use wheel weight pliers to remove all clip-on weights. Peel off any adhesive weights carefully. Clean any remaining adhesive residue with an appropriate cleaner to ensure new weights will adhere properly.
4. 4

   Mount first wheel on balancing machine
   Select the appropriate cone adapter for the Bolt EUV wheel center bore. Mount the wheel onto the balancing machine spindle, ensuring it is centered properly on the cone. Hand-tighten the locking nut to secure the wheel. Enter wheel dimensions (diameter and width) into the balancing machine if required by the specific model.
5. 5

   Perform initial balance measurement
   Lower the safety hood on the balancing machine and initiate a spin cycle. Allow the machine to complete its measurement cycle. The machine will display the amount and location of imbalance on both the inner and outer wheel planes. Record these values if significant imbalance is detected.
6. 6

   Install corrective wheel weights
   Based on the balancing machine readout, install the appropriate weight at the indicated position on the outer rim. Rotate the wheel by hand to the inner weight position and install the required weight on the inner rim lip. For aluminum wheels on the Bolt EUV, adhesive weights are typically preferred for the visible outer surface. Use clip-on weights for the inner rim unless specified otherwise.
7. 7

   Verify balance and fine-tune
   Spin the wheel again on the balancing machine to verify the balance. The machine should indicate zero or minimal residual imbalance (typically less than 0.25 oz per plane). If imbalance remains, adjust weight positions or add/remove weight as indicated. Repeat verification spin until acceptable balance is achieved.
8. 8

   Balance remaining wheels
   Remove the balanced wheel from the machine and set aside. Repeat steps 4 through 7 for each of the remaining three wheels. Maintain organization to ensure each wheel returns to its original position on the vehicle, or rotate as planned during reinstallation.
9. 9

   Reinstall wheels on vehicle
   Lift each corner of the vehicle slightly if needed to reinstall wheels. Mount each wheel onto its respective hub, ensuring the mounting surface is clean and the wheel seats fully against the hub face. Hand-thread all five lug nuts onto each wheel to prevent cross-threading.
10. 10

    Torque lug nuts to specification
    Using a torque wrench, tighten the lug nuts in a star pattern to the specified torque of 190 Nm (140 lb-ft). Start at 50% torque for the first pass, then perform a second pass at full torque, maintaining the star pattern sequence. This ensures even clamping force and proper wheel seating.
    Torque spec

    Wheel Lug Nuts136 Nm (100 lb-ft)
11. 11

    Lower vehicle and perform final torque check
    Remove jack stands and carefully lower the vehicle completely to the ground using the floor jack. With the vehicle weight on the wheels, perform a final torque check on all lug nuts in the star pattern at 190 Nm (140 lb-ft) to confirm proper seating under load.
    Torque spec

    Wheel Lug Nuts136 Nm (100 lb-ft)

Reassembly

1. Store jack stands and floor jack properly after use
2. Dispose of old wheel weights according to local regulations
3. Mark service date and mileage for tire balance maintenance records

Verification

• Test drive the vehicle at various speeds (30-70 mph) to verify elimination of steering wheel vibration or seat vibration
• Confirm no unusual tire wear patterns are present before and after balancing
• Verify all lug nuts remain tight after 50-100 miles of driving with a follow-up torque check
• Listen for any unusual noises from wheels during test drive that might indicate improper installation

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