This is going to be the first time I take my 2000 bmw 323i in for a warranty check. I am noticing a lag when i press the gas for the car to accelerate, I only put in supreme unleaded? Also when I turn on the car I feel a shaking vibration when the car turns on. Also, I have noticed that I have to press the gas pedal almost all the way in so the car can accelerate? Does ne1 know the reason for this? And how can I fix the gas pedal problem it is really annoying?
I want to also buy some new tires for the car what do u guys recommend?
I want a really smooth ride....

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