Mounting instructions: Installation

Maximum permissible radial runout and lateral runout of the light alloy wheels = 0.7 mm. Maximum permissible radial runout and lateral runout of the wheel with tyre = 1.25 mm. Values less than 1.0 mm - better around 0.5 mm - are desirable.

After mounting the tubeless tyres, inflate them without valve insert to approximately 4.0 bar gauge pressure in order to ensure that they are seated properly on the wheel. At the latest when the pressure reaches 4.0 bar, the tyre beads must pop out of the deep bed and over the hump of the wheel shoulder in order to avoid fractures of the bead core. If necessary, interrupt the process and coat all necessary surfaces with lubricant (tyre mounting paste) again. Then repeat the process. Screw in the valve insert and set the prescribed tyre pressure.

If new tyres are to be mounted or the tyres of one axle are to be replaced, tyres of the same make and with the same specification code must always be used on each of the two axles. If tyres are replaced on one axle only, the different tread depth than on the other axle can cause a noticeable change in the familiar handling. This is especially the case if new tyres are mounted on the rear axle. This effect decreases with increasing tyre mileage.

NOTE:

If a tyre is damaged and it cannot be determined with absolute certainty that there is no ply damage - with all of its consequences - or if the tyre was thermally or mechanically overloaded due to a loss of pressure or other prior damage, we recommend replacement of the tyre in question for safety reasons.
When replacing a tyre on an axle, make sure that the tread depth of the new tyre does not differ from that of the other tyre by more than 30 %.
Repairs on ZR tyres are impermissible, as is the use of inner tubes in tubeless tyres.
When replacing summer tyres, pay close attention to the tyre specification number.

The overview of summer and winter tyres is included in Technical Information (TI), Group 4. The specification code N1, N2, N3 or N0 distinguishes summer tyres expressly approved by Porsche from other versions of the same tyre type and size.