2005 PORSCHE BOXSTER technical data

5
Tire Pressures for Cold Tires Summer tires and snow tires These tire pressures are valid only for Porsche approved tires.
For replacement tires it is imperative that you consult the Technical Data and Tires, Wheels
sections of this manual and follow the recommendations found there. 17 inch wheels front 29 psi (2.0 bar)
rear 36 psi (2.5 bar)
18 inch wheels front 29 psi (2.0 bar)
rear 36 psi (2.5 bar)
19 inch wheels front 32 psi (2.2 bar)
rear 36 psi (2.5 bar)

9
Controls, Instruments 11 – 144
Shifting Gear 145 – 152
Mobile Roofs 153 – 166
Maintenance, Car Care 167 – 200
Practical Tips, Emergency Service 201 – 255
Vehicle Identification, Technical Data 258 – 271
Index 272 – 276

206
Practical Tips, Emergency Service
Tire pressures
Warning!
Incorrect tire pressure causes increased tire
wear and adversely affects road handling.
fAlways use an accurate tire pressure gauge
when checking inflation pressures.
fDo not exceed the maximum tire pressure list-
ed on the tire sidewall.
Please observe the chapter “VEHICLE IDENTI-
FICATION NUMBER” on Page 258.
fCold tire inflation pressure means: all tires
must be cold, ambient temperature maximum
(68°F, (20°C)
, when adjusting the inflation pres-
sure.
Avoid sunlight striking the tires before measur-
ing cold pressures, since the pressures would
rise from temperature influence.
fValve caps protect the valve from dust and dirt,
and thus from leakage.
Always screw caps tightly down.
Replace missing caps immediately.
fUse only plastic valve caps.
fDo not use commercially available sealant or
tire inflating bottles. Only use Porsche approved tire sealant.The tire pressure must match the prescribed val-
ue.
You can find information on tire pressure:
– on Page 5 of this Owner’s Manual
– and in the left door aperture.
These values are for cold tires (68°F (20 °C)).
fCheck the tire pressure at least every
2 weeks. Always check when tires are cold.
When tires are warm, the tire pressure is
increased.
fNever let air out of hot tires.
This could cause the tire pressure to fall below
the prescribed value.
Insufficient tire filling pressure can cause tires to
overheat and thus be damaged – even invisibly.
Hidden tire damage is not eliminated by subse-
quently correcting the tire pressure.Overloading
Danger!
Risk of personal injury, loss of control and
damage to vehicle parts.
fDo not overload your vehicle. Be careful about
the roof load.
fIf loading the vehicle also correct the tire pres-
sure. Tire pressure for loaded vehicle can be
found on the tire pressure plate and in the
chapter technical data.
fNever exceed the specified axle load.
Overloading can shorten the service life of the
tires and car, as well as lead to dangerous ve-
hicle reactions and long braking distances.
Damage due to overloading is not covered by the vehicle warranty.
fPlease observe the chapter “LOADING INFOR-
MATION” on Page 216.
fPlease observe the chapter “TIRE PRESSURE
FOR COLD TIRES” on Page 264.

Practical Tips, Emergency Service
213
Snow chains
Caution!
Risk of damage to body, axle or brake com-
ponents.
fFit snow chains only to the rear wheels, and
only with the tire/rim combination listed in the
Technical Data.
To ensure adequate clearance between chain
and body, Porsche recommends only the use
of fine-link chains such as those approved by
Porsche.
fFollow instructions issued by the supplier of the chains.
Different states and countries have varying statu-
tory requirements regarding maximum speed.
Check with local authorities for possible restric-
tions.
fRemove chains as soon as the roads are free
of ice and snow.
Tire designations Due to new speed and load ratings for radial tires,
new designations have come into force for snow
tires for your Porsche.
The designation to be used for ZR tires is e.g.,
265/40 ZR 18 (Z = code letter for radial tires for
speeds above 150 mph / 240 km/h).

Practical Tips, Emergency Service
223
Checking tire pressure with a
pressure gauge1. Remove the valve stem cap from the tire.
2. Press the pressure gauge onto the valve stem.
Note on operation
fDo not press too hard or force the valve stem
sideways, or air will escape.
If the sound of air escaping from the tire is
heard, reposition the pressure gauge.
3. Read the tire pressure on the gauge stem and
compare it to the permissble tire pressure.
This information can be found on the tire pres-
sure plate or in the chapter Technical Data.
Please observe the chapter “TIRE PRESSURE
FOR COLD TIRES” on Page 264.
4. Remove the pressure gauge.

Vehicle Identification, Technical Data
257 Vehicle Identification, Technical Data

258
Vehicle Identification, Technical Data
Vehicle IdentificationWhen ordering spare parts or making inqui-
ries, please always quote the vehicle identifi-
cation number. Vehicle identification label Vehicle identification label is attached to the inner
side of the front luggage compartment hood be-
low the hood lock. It contains all important data
about your car.
This label contains the following information:
1. Vehicle Identification No.
2. Type/Type description
3. Engine code/Transmission code
4. Paint No./Interior
5. Optional equipment
A duplicate of this label is in your Maintenance
Booklet.
Note
This data bank cannot be re-ordered if it is lost or
damaged.
Vehicle identification number In accordance with Federal Safety Regulations,
the vehicle identification number of your car is lo-
cated at the bottom left of the windshield frame
and can be seen from the outside.
The vehicle identification number is in the front lug-
gage compartment under the battery cover and at
the bottom left behind the windshield.
fPlease observe the chapter “BATTERY” on
Page 229.
Safety compliance sticker The safety compliance sticker is your assurance
that your new Porsche complies with all applicable
Federal Motor Vehicle Safety Standards which
were in effect at the time the vehicle was manuf-
actured.
The sticker also shows the month and year of pro-
duction and the vehicle identification number of
your car (perforations) as well as the Gross Vehic-
le Weight Rating and the Gross Axle Weight Ra-
ting.

Vehicle Identification, Technical Data
259
Tire pressure plateThe tire pressure plate is attached to the left-hand
door aperture.Paint dataThe paint data can be found on the tire pressure
plate.
Engine number The engine number is stamped on the underside
of the crankcase.