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    Steering wheel vibration

    I've got about 3,500 miles on her, and even though i've equalized the tyre pressures there is still a slight vibration at 50-60mph.
    She's got pirelli p-zeros, and i've driven her quite hard .I shudder to think its tyre wear already, i don't know.

    Any ideas?

    Re: Steering wheel vibration

    did you have the alignment checked out? mine didn't come aligned properly from the factory, and i've heard others have had the same issue. ask the guy to check the pattern of your tire wear too

    Re: Steering wheel vibration

    it was fine until a couple of days ago, i'll get it checked up in a couple

    Re: Steering wheel vibration

    Zack,

    Check the insides of your wheels. My MB E500 also developed a slight vibration at 6500 miles. I was sure it was an out-of-balance tire, but the dealer put it on the rack, and viola, saw that the left front inner wheel rim had a bend in it. Outside looked perfect. God I hate potholes. With so few miles on your car, that would be my best guess. BTW, about $125 to straighten the rim at most wheel houses.

    Good luck!

    Re: Steering wheel vibration

    Zack,
    I had the same balance problem at first with my P-Zero's on 19" Carrera Classics, was getting choppiness/ tremors at around 60 - 70 mph with 1200 miles on the odometer. Have your Porsche dealer road-force balance the front wheels.

    On my car the dealer had to deflate both of my front tires and reposition them on the rims in order to bring the road force readings down. If I recall correctly the road force balancing on one of the front wheel readings went from around 50 down to 11. On the other wheel the reading dropped from 40 down to 9 or thereabouts.

    My dealer did @ no cost -- they recorded it as warranty item. The improvement was immediately noticeable at the 60-70 mph speeds, not perfect but 80% better and acceptable.

    If your dealer's service department looks perplexed when you ask about road-force balancing, call around for an independent shop which is equipped to do it and recognizes some of the above remedies.

    Or it could be a dented inside rim as others suggested, our low-pro tires unfortunately susceptible to this.

     
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