When the Roof Transport System is loaded, the maximum speeds depends on the nature, size and weight of the load being carried.
Driving, braking and steering behavior change due to the higher center of gravity and the greater wind resistance. You should adapt your driving style accordingly.
Nevertheless, Porsche recommends that you do not exceed the posted speed limit.
Never drive faster than 80 mph (130 km/h)
when the Roof Transport System is fitted and
With the basic carrier fitted and no load, do not
exceed a maximum speed of 110 mph
Washing the vehicle in a car wash or failure to observe the overall vehicle height or the permitted gross weight can damage the vehicle or Roof Transport System.
Remove the roof transport system completely before washing the vehicle in a car wash.
Check the overall vehicle height with the Roof Transport System fitted before driving into multi-storey car parks, garages underground garages and tunnels.
Do not exceed the permissible roof load, permissible gross weight and permissible axle loads.
Details of these weights and loads can be found under "Technical data" in this Owner's Manual:
Please see the chapter "WEIGHTS" on page 341.
Since fuel consumption and noise are increased with the Roof Transport System is fitted, it should not remain on the vehicle if not in use.
For information on stowing loads and luggage:
Please see the chapter "LOADING INFORMATION" on page 237.
A - Front carrier bar B - Rear carrier bar C - Cover trims D - Torque wrench E - Key
Fitting carrier bars
A sticker on the underside of the carrier bars identifies the front and rear bars (illustration).
Fit the carrier bars so that the sticker is on the left side of the vehicle.
Always observe these markings when fitting the carrier bars on the roof rails.