2008 Mazda MAZDA3 Owner's Manual - Page 306

Maintenance and Care Owner Maintenance NOTE Tires degrade over time, even when they are not being used on the road. It is recommended that tires generally be replaced when they are 6 years or older. Heat caused by hot climates or frequent high loading conditions can accelerate the aging process. You should replace the spare tire when you replace the other road tires due to the aging of the spare tire. Regarding the manufacturing week and year is indicated with 4 digit. Refer to The tire labeling on page 9-22. CAUTION Ø A wrong-sized wheel may adversely affect: Ø Tire fit Ø Wheel and bearing life Ø Ground clearance Ø Snow-chain clearance Ø Speedometer calibration Ø Headlight aim Ø Bumper height Ø Tire Pressure Monitoring System Ø Limited-Slip Differential System Ø (With Tire Pressure Monitoring System) Ø When replacing/repairing the tires or wheels or both, have the work done by an Authorized Mazda Dealer, or the tire pressure sensors may be damaged. Ø The wheels equipped on your Mazda are specially designed for installation of the tire pressure sensors. Do not use non-genuine wheels, otherwise it may not be possible to install the tire pressure sensors. NOTE Be sure to install the tire pressure sensors whenever tires or wheels are replaced. Refer to Tires and Wheels on page 5-30. qReplacing a Wheel WARNING Always use wheels of the correct size on your vehicle: Using a wrong-sized wheel is dangerous. Braking and handling could be affected, leading to loss of control and an accident. When replacing a wheel, make sure the new one is the same as the original factory wheel in diameter, rim width, and offset. Proper tire balancing provides the best riding comfort and helps reduce tread wear. Out-of-balance tires can cause vibration and uneven wear, such as cupping and flat spots. 8-38