2014 PORSCHE 911 TURBO Owners Manual

Minor Repairs 247
Risk of damage to the vehicle and to the tires.
Damage due to overloading is not covered by the vehicle warranty.
Tire damage may also be caused by overloading, and this damage is not covered by your tire warranty.fDo not overload your vehicle. Be careful about the roof load. fIf you plan to load the vehicle, first correct the tire pressure. 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.
fPlease see the chapter “LOADING INFORMATION” on page 204.
NOTICE
Example of a tire pressure plate
Tire Pressure plate
Information on the tire pressure plate
A Seating capacity
Maximum number of vehicle occupants, including the driver.B Vehicle load limit
Is the maximum total weight limit specified of the load (passengers and cargo) for the vehicle. This is the maximum weight of passengers and cargo that can be loaded into the vehicle. Please see the chapter “LOADING INFORMATION” on page 204.
C Original tire size
Size of tires mounted at the factory. D Recommended cold tire inflation pressure
These values are for cold tires (68 °F/20 °C).
Tire traction
When driving on wet or slushy roads, a wedge of water may build up between the tires and the road. This phenomenon is known as “hydroplane” and may cause partial or complete loss of traction, vehicle control or stopping ability.fReduce speed on wet surfaces.
HydroplaningWARNINGh
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248 Minor Repairs
Tire life
Tire life depends on various factors, i.e., road surfaces, traffic and weather conditions, driving habits, type of tires and tire care.fInspect your tires for wear and damage before driving off. If you notice uneven or substantial wear, wheels might need alignment or tires should be balanced or replaced.
Tire wear
The original equipment tires on your Porsche have built-in tire wear indicators. They are molded into the bottom of the tread grooves and will appear as approximately 1/2 in. (12 mm) bands when the tire tread depth is down to 1/16 of an in (1.6 mm).
When the indicators appear in two or more adjacent grooves, it is time to replace the tires. We recommend, however, that you do not let the tires wear down to this extent. Worn tires cannot grip the road surface properly and are even less effective on wet roads.
In the United States, state laws may govern the minimum tread depth permissible. Follow all such laws.
Driving on worn tires can result in loss of control of the vehicle and could cause serious personal injuries or death.fDo not drive with worn tires or tires showing cuts or bruises as they may lead to sudden deflation and loss of control which could cause severe personal injury.fSpecialized high performance tires on high performance sports cars exhibit more wear than those on a family sedan, or even a high performance sedan. Therefore, it is important to check your tire
pressure and condition at least every two weeks.
fIf you notice that tires are wearing unevenly, consult your authorized Porsche dealer.
Uneven wear may not always be due to improper wheel alignment. It can be the result of individual driving habits such as cornering at high speeds. If the tire pressure is not checked and adjusted regularly, abnormal tire wear can also occur.
Tire care
fAvoid damaging tires and wheel rims.fIf you must drive over a curb or other obstacle, drive slowly and at an obtuse angle.fCheck tires for uneven wear and damage before driving off.fRemove embedded material.fReplace worn or damaged tires immediately.fKeep oil, fuel, brake fluid, etc. away from tires.fReplace missing valve stem caps.fKeep tires inflated correctly.fWash tires when washing the vehicle. Also clean inner side of wheels.fDo not use abrasive cleaners when washing the wheels.fCheck wheel rims for corrosion.fRemove road salt, if driving in winter.
Tire damage, puncture
fPlease see the chapter “HIGH-PRESSURE CLEANING EQUIPMENT, STEAM CLEANERS” on page 232.
Driving the vehicle with low tire pressure increases risk of a tire failure and resulting loss of control. Furthermore, low tire pressure increases the rate of wear of the affected tires.fCheck tires – including sidewalls – regularly for foreign bodies, nicks, cuts, cracks and bulges.fAfter driving off road, examine tires for signs of damage such as cuts, tears, bulges or foreign objects stuck in the tread. Replace a damaged tire if necessary.fCross curb edges slowly and at right angles if possible. Avoid driving over steep or sharp curbs.fIn cases of doubt, have the wheel (particularly the inner side) checked by an authorized Porsche dealer.
In case of tire damage, where it is uncertain whether there is a break in the ply with all its consequences or tire damage caused by thermal or mechanical overloading due to loss of pressure or any other prior damage, we recommend that the tire be replaced for safety reasons.
If one faulty tire is replaced it should be noted that the difference in tread depth on one axle must not exceed 30%. Handling inconsistencies may result.fRecommendation: Replace both tires on one axle so that no handling inconsistencies may result due to different tread depths.fPerform a visual inspection if necessary.
Excessively-worn TiresDANGERh
Damaged Tire CheckDANGERh
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Minor Repairs 249
Tire replacements
fUse only tire makes and types tested by Porsche.
If you do not use a Porsche recommended replacement tire, make sure that you purchase your new tires from a reputable tire dealer and that the dealer complies with all manufacturers warnings for those tires.
Only tires with the same manufacturer and with the same specification code (e.g. “N0”, “N1”…) should be mounted on the vehicle.
Before mounting new tires, check with your Porsche dealer about the current release status.
Use tires with “ZR” quality standards. There are currently no standards concerning tire strength at speeds above 150 mph (240 km/h).
Tires should be replaced no less than on one axle at the time. Only tires of the same make and type must be used. Mixed tires are not permissible and will affect vehicle performance, safety, and can affect vehicle warranty.
Porsche dealers can recommend the most current replacement tire options for your vehicle.
Initially, new tires do not have their full traction. You should therefore drive at moderate speeds during the first 60 - 120 miles (100 - 200 km).
Tires must always remain on the same side of the vehicle.When wheels are removed, the direction of rotation and position of each wheel should be marked.
If new tires are installed only on one axle, a noticeable change in handling occurs due to the different tread depth of the other tires. This happens especially if only rear tires are replaced. However, this condition disappears as the new tires are broken in.fPlease adjust your driving style accordingly.
Installation of new tires should only be done by a qualified tire technician.
Valves
fUse only plastic valve caps.fPlease read the fitting and replacement instructions regarding metal valves.fUse original Porsche metal valves only.fValve inserts with valve caps protect against soiling.Soiled valve inserts can cause a gradual loss of air.
Parking at the curb
Hard impacts against curbs (or traffic islands) are dangerous and may cause hidden tire damage which is not noticeable until later. Such damage can result in accidents at high speeds. Depending on the force of impact, the edge of the rim can also be damaged.fAfter such an impact, have the wheel checked by an expert.fIf you must drive over a curb or other obstacle, drive slowly and at an obtuse angle. Exercise care when parking along curbs.
Information
Tire repairs are not permissible under any circumstances.
Curb Impact / Tire Damage
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250 Minor Repairs
Wheel alignment, wheel balancing
As a precaution, have wheels with summer tires balanced in the spring, and those with mud and snow tires before winter. Unbalanced wheels may affect car handling and tire life.Only the specified weights may be used for wheel balancing.
Self-adhesive weights must not come into contact with cleaning agents, since they could drop off.Uneven tread wear indicates wheel imbalance. In this event, the vehicle should be checked at an authorized Porsche dealer.
If, during a trip, uneven running or vibrations occur that could be caused by damage to tires or the car, the speed must be reduced immediately, but without braking sharply. If you continue your trip without having the cause of the fault remedied, you might lose control of your vehicle.fStop the vehicle and check the tires.fIf no cause for the fault can be found, drive carefully to the nearest authorized Porsche dealer.
The summer tires of your Sports Car have been specially developed and adapted for high performance. At low outside temperatures (<15°C (60°F)), the tire characteristics change. This can result in noises occurring when parking or maneuvering at low outside temperatures.
Wheels with Tire Pressure Monitoring System (TPMS) sensors
Before changing wheels, make sure that the wheels are compatible with your vehicle’s TPMS.fCheck this with your authorized Porsche dealer.
Removing and storing tires
fAfter changing, adjust tire pressure and torque wheel bolts diagonally. Please see the chapter “CHANGING WHEELS” on page 254.fStore tires in a cool and dry place. Rotate periodically to avoid flat spots.fDo not store summer tires or park vehicles fitted with summer tires at ambient temperatures below 5 °F (-15 °C).fAvoid contact with fuel, oil and grease.
Tires must always remain on the same side of the vehicle.When wheels are removed, the direction of rotation and position of each wheel should be marked.
Example
FR (front right), FL, RR and RL.
Wheels must always be fitted in accordance with their marking.
The perception that tire durability and performance are not affected by storage and age is unfounded. Chemical additives, which make the rubber elastic, lose their effectiveness over the course of time and the rubber becomes brittle and cracks.
Therefore, the tires should be inspected from time to time.
Information
Under no circumstances should tires older than 6 years be used on your Porsche.
The age of the tire can be obtained from the “DOT” code number. If, for example, the last four numbers read 1213, then the tire was produced in the 12th week of 2013.
Snow tires
The installation of Porsche approved snow tires is recommended.
Use Porsche approved snow tires for grip on snow and ice. Summer performance tires are not suitable for usage in cold, snowy, or icy conditions.Check with your local Motor Vehicle Bureau for possible restrictions.
High-Speed tire Vibration
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Minor Repairs 251
The standard tires profile and rubber mixture are optimized for wet and dry driving conditions, and may not prove favorable for snow conditions.fInstall snow tires before driving in such conditions.
Risk of insufficient road grip leading to loss of control and damage to the vehicle.
The standard tires profile and rubber mixture are optimized for wet and dry driving conditions, and may not prove favorable for snow conditions.fInstall snow tires before driving in such conditions.
Before mounting snow tires, consult with your Porsche dealer. They have the technical information necessary to advise you on wheel and tire compatibility.fSnow tires should have the same load capacity as original equipment tires and should be mounted on all four wheels.
Driving the vehicle with low tire pressure increases risk of a tire failure and resulting loss of control. Furthermore, low tire pressure increases the rate of wear of the affected tires and causes damage.
Tires with badly worn treads are very dangerous and could cause accidents.fMake sure they are replaced immediately.fDo not exceed the snow tire speed rating.
Snow tires do not have the same degree of traction on dry, wet or snowfree roads as normal tires. Furthermore, snow tires wear rapidly under these conditions.
Information
We recommend that you fit snow tires on the vehicle at temperatures below 45 °F (7 °C) since the driving performance of summer tires is reduced at low temperatures and a lower level of comfort can also be expected. For example, juddering noises caused by the tires can occur while maneuvering the vehicle or accelerating out of bends on both dry and wet road surfaces.Extremely low temperatures of below 5 °F (-15 °C) can cause permanent damage to summer tires.
Snow tires lose their suitability when their tread depth falls below 5/32 in. (4 mm).
Comply with all state and local laws governing snow tire and tread depth requirements.
Exceeding the maximum permitted speed for the tires fitted could cause tire failure.fAlways check the maximum speed rating on the tire sidewall on any tire on the vehicle.fNever exceed the maximum speed rating of the tires.
Wheel change
fWhen wheels are removed, mark the direction of rotation and position of each wheel.Example: FR (front right), FL, RR and RL.fAlways fit the wheels in accordance with the markings.
Snow chains
Risk of damage to body, axle or brake components.fFit snow chains only to the rear wheels, and only with the tire/rim combination listed in the Technical Data.fUse only the fine-link snow chains recommended and authorized by Porsche so that sufficient clearance between the wheel well and the chain is assured.fPlease see the chapter “WHEELS, TIRES” on page 286.fFollow instructions issued by the supplier of the chains.
Snow Tire Use
Tire Hazards
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NOTICE
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Excessive Speed for Tires
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NOTICE
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252 Minor Repairs
Fitting snow chains
fBefore fitting chains, remove accumulated ice and snow from the wheel well.fVehicles with snow chains must not be driven faster than 30 mph (50 km/h).
Different states and countries have varying statutory requirements regarding maximum speed.fCheck with local authorities for possible restrictions.fRemove chains as soon as the roads are free of ice and snow.
Example of Inscription
Inscription on radial tire
A – Tire size
Example: P 265/40ZR18 (101Y) – P - The tire is designed for Passenger vehicle. This information is not included on all tires.– 265 - Indication of tire width in mm – 40 - Indication of tire height to tire width ratio in percent– ZR - Belt type code letter for radial – 18 - Indication of rim diameter in inches – 101 - Load capacity coefficient
– Y - Speed code letter – XL (Extra Load) - Tire with increased load rating
B – TIN (Tire Identification Number)
Example: DOT xx xx xxxx xxxx – DOTThe DOT symbol indicates that the tires comply with the requirements of the US Department of Transportation and provides information about:– first two-digit code means manufacture’s identification mark.– second two-digit code means tire size.
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– third four-digit code means tire type code. – fourth four-digit code means date of manufacture.If, for example, the last four numbers read 0211, the tire was produced in the 2nd week of 2011.
C – Tire ply composition and material
The number of layers in the tread and sidewalls and their material composition.
D – Maximum permissible inflation pressure
The maximum permissible cold inflation pressure to which a tire can be inflated.fDo not exceed the permissible inflation pressure.
E – Maximum Load rating
The maximum load in kilograms and pounds can be carried by the tire. If you replace tires always use a tire that has the same maximum load rating as the factory installed tire.
F – Radial
The identification indicates if the tire has radial structure.
G – Term of tubeless or tube tire
Identification for tubeless tires.
Speed code letters
The speed code letter Y indicates the maximum permitted speed for the tire.This code letter is shown on the tire sidewall.
Information
Tires with a maximum speed rating that is lower than the specified maximum vehicle speed may be mounted only if they bear an M+S identification on the tire sidewall.fPlease note that in addition to snow tires, all-season tires are also subject to speed limits and bear this identification.fNever drive faster than the speed rating of the tires, and obey all speed and traffic laws.
G - Rim width in inches H - Rim-flange contour code letter I - Symbol for drop-center rim J - Rim diameter in inches K - Double hump L - Rim offset in mm
Inscription on alloy wheels
The information is provided on the rear of the spokes. The rim width in inches A and the rim offset F are visible from the outside. This information can be found near the tire valve.
T up to 118 mph (190 km/h)
H up to 131 mph (210 km/h)
V up to 150 mph (240 km/h)
W up to 167 mph (270 km/h)
Y up to 186 mph (300 km/h)
(Y) up to 186 mph (300 km/h) as for Y tires. Speeds of more than 185 mph(300 km/h) are also possible at a maximum tire load capacity of 85 % (confirmation from tire manufacturer required for speeds of more than 185 mph (300 km/h)).
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254 Minor Repairs
Jacking point for lifting platform and jack at the front
Raising the vehicle with a lifting platform, trolley jack or standard jack
fBefore driving the vehicle onto a lifting platform, make sure that there is sufficient space between the lifting platform and the vehicle.
Jacking point for lifting platform and jack at the rear
Risk of serious damage to the engine or vehicle if you lift the vehicle improperly.fLift only at the jacking points provided.fBefore driving the vehicle onto a lifting platform, make sure that there is sufficient space between the lifting platform and the vehicle.fTo avoid serious damage, never jack up the vehicle at the engine, transmission or at the axles.fUse only level anti-slip rubber pads on a lifting platform.fDo not damage any sensitive components in the vicinity of the jacking points.
Changing Wheels
Other vehicles could collide with your vehicle if you are parked in a dangerous position.fIf you have a flat tire, move a safe distance off the road. Turn the emergency flasher on and use other warning devices to alert other motorists.fDo not remain in the car. Someone approaching from the rear may not realize your vehicle is stopped and cause a collision.
Exhaust fumes and the exhaust system are very hot when the engine is running. The exhaust system remains hot for some time after the vehicle is turned off.fDo not park your vehicle in areas where the hot exhaust system may come in contact with dry grass, brush, fuel spill or other flammable material.
If the vehicle is not secured, or incorrectly secured, during a wheel change, it could move unexpectedly or fall from the car jack.fPassengers must not be in the vehicle when it is jacked up.
NOTICE
Unsafe Stopping
Stopping Over Nearby Flammable Matter
Jacking Risks
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