All models up to 2007 with cast aluminum wheels may experience a loss of air pressure that is due to porosity in the aluminum casting. Have your repair shop refer to GM SB-05-03-10-003B for instructions on how to repair this problem.
Proper tire inflation is critical to the safe operation of all vehicles. Tire pressure specifications can be found on an inflation sticker on the driver's door frame or in the owners manual. Fuel mileage, increased tire wear, ride quality, handling, and road noise are just a few of the problems that might arise from improperly inflated tires.
Some tires may get a "flat spot" after sitting overnight. This can cause a slight tire shake until the tires reach operating temperature. This is a normal condition.
Saab Tire Questions and Answers
Noise sounds like Wha Wha Wha...
only when accelerating, my saab will begin to shake violently. Just bought the car yesterday, doesn't matter what gear I'm in, shaking still occurs. When I let off the gas, the shaking stop...
Feels like we're driving a washing machine during the agitation cycle. Help please. What to look at and how much max to fix!
Tires are great, transmission fluid normal, can't think of what to check next. Feels like gear shift has been thrown in neutral temporarily.