General Comments

The rubber valve stem (part numbers 900 265 001 50 or 000 044 600 00, including cap) should be replaced with the mounting of each new tire.

Observe tire mounting instructions, regarding direction of rotation and or side direction when mounting. Use lubricant to facilitate mounting and to prevent damage to tire beads. Avoid extreme acceleration and braking for the first 60 to 120 miles to prevent tire movement on the wheel. Wheel balancing accuracy may be affected if this should occur.

Optimal wheel balancing and minimal tire noise can be achieved by matching the tire run out to the wheel. Please refer to the following comments on controlled and uncontrolled matching.

Uncontrolled matching:

If required, move tire on wheel by 90 or 120 degrees to find acceptable values regarding out of round conditions, imbalance, and wheel balancing weight application.

Controlled matching:

Use balancing equipment with matching program capability. Values can be optimized.

Maximum permissible axial and lateral run out of wheels <= 0.7 mm.

Maximum permissible axial and lateral run out of tire and wheel assembly <= 1.25 mm (desired value <= 1.0 mm).

When mounting tires do not exceed inflation pressure of 4.0 bar while seating tire beads.

When new tires are mounted on one axle always use a matched set from the same tire manufacturer with the same "N" designation. The handling characteristics of the vehicle may be affected by differing tread depths between front and rear axle tire sets. This effect is especially true when the rear tire set has been replaced. Use caution during break in of tires.

When handling tire complaints and tire damage is determined, the tire should be replaced. The tire should also be replaced if you are uncertain about cord damage or if the appearance of overheating makes the tire suspect in any manner.

When replacing a single tire on one axle, the difference in tread depth on the axle may not exceed 30%.

Repairs on ZR tires and use of tire tubes are not allowed.