Porsche Carrera 911 997 owners manual page 237

text version of content this owner's manual page from owners manual to the vehicle Porsche Carrera 911, year of production 2004 - 2011:

Tires/Wheels Danger! The original equipment tires and wheel rims on Risk of loss of control and serious personal your Porsche comply with all applicable Federal injury or death. Motor Vehicle Safety Standards. f If while driving, your vehicle experiences a sud- den vibration or ride disturbance, and/or you For your safety remember the following: suspect that possible damage to your tires or – Wheel rims and wheel bo lts are matched to fit vehicle has occurred, you should immediately your Porsche. reduce your speed without excessive use of the brakes. – If you intend to use other than original equip-f Stop the vehicle as soon as possible, and in- ment wheels, be sure that they conform to spect the tires. Porsche specifications for your model.If you cannot determine the cause for the dis- Only tires with the same make and with the turbance, have your vehicle towed to the near- same specification code (e.g. “N0”, “N1”.) est Porsche or tire dealer to have your vehicle can be mounted. or tire(s) inspected. – The use of wheel rims and wheel bolts that do f Continuing to operate the vehicle without cor- not meet specifications of the original factory rection could result in a loss of control and installed equipment will affect the safe opera- Example tion of your vehicle. serious personal injury. – Before you plan on exchanging wheels, or Uniform Tire Quality Grading snow tires already mounted on the wheel rims, Quality grades can be found where applicable on consult your authorized Porsche dealer. Your the tire sidewall between tread shoulder and max- dealer has the technical information necessary imum section width. to advise you which wheel rims and wheel bolts are compatible with the original factory instal- All passenger car tires must conform to Federal lations. Safety Requirements in addition to these grades. Treadwear The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specific govern- ment test course. For example, a tire graded 150 would wear one Practical Tips, Emergency Service 235

owners manual Porsche Carrera 911

owners manual Porsche Carrera 911 - year of production: 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 - Porsche Carrera 911 997 owners manual EN