Tires - Permanent High Spot Marking on Sidewalls

*NUMBER: JTB00010
(ISSUE 2)*

MODEL:
S-TYPE
X-TYPE
*XF*, XJ, XK

*DATE: 06 MAY 2008*

THIS BULLETIN REPLACES JTB00010 ISSUE 1, DATED 05 FEB 2007. CHANGES ARE HIGHLIGHTED IN GRAY AND SHOWN WITH ASTERISKS.

SECTION: 204-04 - WHEELS AND TIRES
Permanent 'High Spot' Marking To Tire Inboard Sidewall





*AFFECTED VEHICLE RANGE*

CONDITION SUMMARY:

PERMANENT 'HIGH SPOT' MARKING TO TIRE INBOARD SIDEWALL

Situation:

This bulletin has been issued to inform service technicians of a permanent 'high spot' mark that is located on the tire inboard sidewall to identify the high spot for radial force variation.

Starting from the above VINs, a 'yellow' paint dot (10-13 mm in diameter) has been applied to the tire inboard sidewall. Engineering evaluation tests have established that when mounting a wheel/tire assembly to the hub, the position of this yellow spot can influence the vehicles level of refinement.

The optimum condition is to bias the wheel on the hub spigot towards the tires yellow dot position.

Action:

When mounting a wheel/tire assembly to the vehicle hub, refer to the Repair Procedure detailed in this bulletin to ensure the optimum wheel mounting position is achieved.

PARTS:

No parts required; issued for information purposes only.

WARRANTY:

No warranty; issued for information purposes only.

Normal warranty policy and procedures apply.

REPAIR PROCEDURE

ENSURE OPTIMUM WHEEL MOUNTING POSITION IS ACHIEVED





1. Mount the wheel to the vehicle hub, ensuring the yellow dot, located on the inboard sidewall of the tire, is positioned at the lowest attainable position (i.e. 6 o'clock position), as illustrated in Figure 1.

2. Hand-tighten the wheel lug nuts.

3. Lower the vehicle to the ground and tighten the wheel lug nuts according to the specified torque value located in GTR Workshop Manual section 204-04: Wheels and Tires > link to > Specifications.





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