Brakes and Traction Control: Testing and Inspection

Tests / notes - GT2

Note
The tests and notes apply to the street version (base version) M002 and for the Club Sport version M003. Suspension alignment 911 GT2 see Repair Group 44.

Lilting platform
Ensure clearance of the spoiler(s) and side members when driving onto lifting platforms and wheel alignment platforms.

Wheel alignment platform
It is only possible to drive onto wheel alignment platforms if additional access ramps, for example 959 access aids, are used.
A platform without a sloped position is unsuitable.

Brake test
Brake tests can only be carried out on roller-type test stands or plate test stands.
When driving onto the brake test stand, make sure to drive on as carefully as possible, especially during compression. This helps to prevent the vehicle from bottoming out.

Power test
A power test is not permissible or possible.

Front and rear stabilizer setting

Caution. There will be alterations in the handling if the stabilizer standard setting is changed.
^ The standard setting must not be changed for use on public roads.
^ Attention: Changes to the setting - to match the personal driving style - are permissible only for the racing track.





The front and rear stabilizers can be individually adjusted by means of 5 bores at the front and 4 bores at the rear.





The front stabilizer with 26.8 x 4 mm diameter is adjusted (fitted) to the centre position -arrow-.
The rear stabilizer with 20.7 x 2.8 mm diameter is adjusted (fitted) to the second hardest position (third bore) -arrow-.
This standard setting must not be changed for use on public roads. Attention: Changes to the setting - to match the personal driving style - are permissible only for the racing track.
Adjustment/fitting of the GT2 road version: GT2 = 3rd bore -arrow(GT3 = 2nd bore).

Spoiler setting
^ The spoiler wing is set to the lowest (horizontal) position for street use.
^ Changes to the setting are only intended for the racing track. The spoiler wing must be moved to the lowest position for use on public roads.

Racing camber values
^ Front and rear racing camber values should only be adjusted for use on racing tracks.
^ For use on public roads, only the values listed in Repair Group 44 are permitted.

Switching PSM

Note. The PSM (Porsche Stability Management) is automatically operational/switched on after each engine start.

Switching off PSM





Press the PSM OFF logo of the rocker switch. The PSM switches off after a short delay.
When the PSM is off, the PSM OFF warning light in the instrument panel and the indicator light in the rocker switch are lit.
^ When braking, the vehicle is also stabilized when the PSM is switched off.
^ One-sided wheel spin is also prevented when the PSM is switched off.
^ On Tiptronic vehicles, the function slip upshift is switched off when PSM is switched off. -> item

The PSM should always be switched on for normal driving.
In exceptional cases, it can be advantageous to switch off the PSM temporarily:
- on a loose surface and in deep snow
- when rocking the vehicle free
- when using snow chains.

Switching PSM back on
Press the indicator light in the rocker switch. The PSM switches on after a short delay.

Characteristic features of Tiptronic vehicles (slip upshift)
^ When a maximum permissible speed difference between front and rear axle is exceeded, an integrated slip monitoring shifts into the next highest gear. This increases the driving stability on slippery roads.
^ When PSM is switched off, the slip monitoring (slip upshift function) is also switched off. In this way, the Tiptronic enables an active sporty driving style also when the friction coefficient is low as is the case with manual transmission vehicles.