Saab 2007 Wheel Alignment and Tire Balance, Wheel Replacement, See Changing a wheel on

Car care and technical information 227

Wheel Alignment and Tire Balance

The wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall per- formance.

Scheduled wheel alignment and wheel bal- ancing are not needed. However, if you notice unusual tire wear or your vehicle pull- ing one way or the other, the alignment may need to be reset. If you notice your vehicle vibrating when driving on a smooth road, your wheels may need to be rebalanced.

Wheel Replacement

Replace any wheel that is bent, cracked or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts and wheel nuts should be replaced. If the wheel leaks air, replace it (except some aluminum wheels, which can sometimes be repaired). See your dealer if any of these conditions exist.

Your dealer will know the kind of wheel you need.

Each new wheel should have the same load-carrying capacity, diameter, width, offset and be mounted the same way as the one it replaces.

If you need to replace any of your wheels, wheel bolts or wheel nuts, replace them only with new Saab original equipment parts. This way, you will be sure to have the right wheel, wheel bolts and wheel nuts for your vehicle.

WARNING

Using the wrong replacement wheels, wheel bolts or wheel nuts on your vehicle can be dangerous. It could affect the braking and handling of your vehicle, make your tires lose air and make you lose control. You could have a collision in which you or others could be injured. Always use the correct wheel, wheel bolts and wheel nuts for replacement.

Notice: The wrong wheel can also cause problems with bearing life, brake cool- ing, speedometer or odometer calibra- tion, headlamp aim, bumper height, vehi- cle ground clearance and tire or tire chain clearance to the body and chassis.

See “Changing a wheel” on page 236.

WARNING

When fitting just one new pair of tires, these should be fitted to the rear wheels, as these are more critical to the direc- tional stability of the car (e.g. on braking or in a skid). The existing rear wheels should therefore be moved to the front.

Used Replacement Wheels

WARNING

Putting a used wheel on your vehicle is dangerous. You can’t know how it’s been used or how far it’s been driven. It could fail suddenly and cause a crash. If you have to replace a wheel, use a new GM original equipment wheel.