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#9: 03-04-2013, 06:58 PM
gt06unlimited's Avatar
Title: Junior Member
Location: Walpole, MA
Car: 06 Legacy GT
Posts: 61
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you may have flattened a belt from letting the car sit. most flatspots from sitting will go away as the tires heat up. overinflate your tires to around 35-40 psi and drive on the highway. the pressure will rise another 1-2 psi as the tires warm up and if its due to sitting it will go away. you can trhen return to normal tire pressure. be ultra careful of potholes and bridge expansion joints at higher tire pressures though. your vibration could also be due to brake rotors. after sitting and going through temperature changes they can warp and vibrate. can you feel any pulsation in the brake pedal or see any shimmy in the steering wheel?