44 General tire mounting instructions · Always use new rubber valves when In order to prevent the tire f

911 Carrera (996) Wheels, tires, suspensionalignment 44 General tire mounting instructions General Always use new rubber valves when In order to prevent the tire from turning on the changing tires! wheel when the vehicle is driven, also inform your customers that they should avoid extreme driving manoeuvres(acceleration,braking) Caution: When mountingtires, observe the di- during the first 100 to 200 km with new or rection of rotation or inside/outside identification. recently mounted tires. Mark the relative positions of the tire and wheel for reference if necessary. When mounting tubeless tires, check the sealing surface of the tire and the disc wheel for clean- liness and any signs of damage. Bear in mind The absolute limit on how far the tire can here that the bead base performs the sealing turn on the wheel must be regarded as function on tubeless tires. If the bead edge has 20mm. An optimum balancing result will be to perform the sealing function, air can escape worsened in this case. when the vehicle is driven aggressively(rabbit starts, hard cornering, etc.). In order to optimise smoothnessof rolling, it is expedient-and necessary in individualcases - When mounting the tire beads, use only the tire to mount the tire in a favourable position with mounting pastes specified below. respect to the wheel (matching), The following can occur if an unsuitable moun- Matching (uncontrolled and controlled) is ting paste is used: explainedbelow. Turning of the tire on the wheel, fracture of the bead core when the tire is mounted and Uncontrolled matching: Turning the tire on the damage to the wheel surface by aggressive wheel by 900 or 1800 if necessary in order to substances. achieve an acceptable value with regard to rolling smoothness(true running, imbalanceand Caution: Use only TIP TOP Universal, order No. distribution of balanceweights). 593 0601 (3.5 kg bucket) or Contifix as the mounting paste. If Contifix is used, apply sparinglyto the tire beads (due to risk of the tire turning on the wheel). If possible, the vehicle should not be driven for 24 hours after tire mounting or matching. 44 General tire mounting instructions 44 -17 Printed in Germany, 1997 9964417