TIRE AND WHEEL SYSTEM INSPECTION

CAUTION / NOTICE / HINT

Note

When replacing a tire or tire valve, it is not necessary to remove the wheel cap.

PROCEDURE


  1. INSPECT TIRES


    1. Inspect the tires for wear and proper inflation pressure.

      Cold Tire Inflation Pressure
      Tire Size Cold Tire Inflation Pressure
      Front Rear
      235/65R18 106V

      260 kPa (2.6 kgf/cm2, 38 psi)*1

      230 kPa (2.3 kgf/cm2, 33 psi)*2, *3

      250 kPa (2.5 kgf/cm2, 36 psi)*2, *4
      235/55R20 102V

      300 kPa (3.0 kgf/cm2, 44 psi)*1

      230 kPa (2.3 kgf/cm2, 33 psi)*2

      *1: For driving at 160 km/h (100 mph) or over

      *2: For driving under 160 km/h (100 mph)

      *3: for China, Latin America and Korea

      *4: except China, Latin America and Korea

      Cold Tire Inflation Pressure (for Compact Spare Tire)
      Tire Size Cold Tire Inflation Pressure
      T165/90D18 107M

      420 kPa (4.2 kgf/cm2, 60 psi)

      1. Perform initialization.

        Click here

      2. Tire pressure adjustment method when warm:


        1. Turn the engine switch off.

        2. Connect the GTS to the DLC3.

        3. Turn the engine switch on (IG).

        4. Turn the GTS on.

        5. Enter the following menus: Chassis / Tire Pressure Monitor / Data List.

        6. Adjust the tire pressure so that the displayed value is equal to the set pressure.

        7. Perform initialization and check that initialization completes.

          Click here

        8. Check and record the value of the Data List item "Temperature in Tire". (Ts)

        9. Check and record the ambient temperature during tire pressure adjustment. (Tm)

        10. Readjust the tire pressure according to the difference between the tire internal temperature (Ts) and the ambient temperature (Tm). (P)

          Tech Tips

          Tire internal temperature: Ts, Ambient temperature: Tm, Tire pressure readjustment value: P

          P = (Specified Pressure) + (Ts - Tm)

        11. Check the pressure adjustment value with the Data List item "Tire Inflation Pressure".

        Note

        for ECE-R64 Type:

        If the tire pressure is decreased approximately 20 kPa (0.2 kgf/cm2, 2.9 psi) or more in order to adjust the tire pressure, even if the adjusted tire pressure is 80% or more than the tire pressure set during system initialization, the tire pressure warning light may illuminate if the tire pressure drops below 80% of the tire pressure set when the tires are warmed. In this case, perform initialization again.

    2. A01VV5X

      Using a dial indicator, check the runout of the tires.

      Maximum Tire Runout
      1.4 mm (0.0551 in.)

      Tech Tips

      Measure the runout with the wheel assembly removed from the vehicle.

  2. ROTATE TIRES


    1. Remove the wheel assembly.

      Click here

    2. A01VTIWC02
      B005NIZ Front

      If the spare tire uses a different type of wheel than the other tires, rotate the tires as shown by (A) in the illustration. If the spare tire has the same type of wheel as the other tires, rotate the tires, including the spare tire, as shown by (B) in the illustration.

    3. Install the wheel assembly.

      Click here

    4. Perform initialization.

      Click here

  3. INSPECT AND ADJUST WHEEL BALANCE


    1. A01VVH0C01
      *a 25 mm (0.984 in.)

      Inspect and adjust the off-the-car balance.

      Maximum Wheel Imbalance
      8.0 g (0.0176 lb)

      Note


      • Use a cleaning detergent to remove dirt, oil and water from the surface where the balance weight is to be adhered.

      • Do not touch the adhesive surface of the balance weight.

      • Adhere a stick-on type balance weight to the flat surface*a shown in the illustration.

      • Push the balance weight with your finger to securely adhere it to the desired position.

      • Do not reuse balance weights.

      • Use only LEXUS genuine stick-on type balance weights or equivalent.

      Tech Tips


      • Use clip-on type balance weights for the inner side, and stick-on type balance weights for the outer side.

      • If the tires vibrate even after the off-the-car balance adjustment, adjust the wheel balance with on-the-car balancing as necessary.

  4. INSPECT FRONT AXLE HUB BEARING

    Click here

  5. INSPECT REAR AXLE HUB BEARING

    Click here