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Steering wheel vibration at 75+ mph


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Anyone have any idea what this could be? My steering wheel vibrates quite a bit after I hit 80 mph. I don't have matching tires - (Backs are pirelli's, fronts are OEM) would that affect it? Car is '00 Cabrio with 35k miles. Thanks.
I know this is your first reply but, you must be a troll because no one mixes tire brands on their Porsche :rolleyes:
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Anyone have any idea what this could be? My steering wheel vibrates quite a bit after I hit 80 mph. I don't have matching tires - (Backs are pirelli's, fronts are OEM) would that affect it? Car is '00 Cabrio with 35k miles. Thanks.

My Dunlops 9090 are fantastic, no vibrations, no noise and I think a Porsche is worth matching tyres, although I do not think that having a different brand on the front from the rear should matter as regards vibrations....but wheel balancing does!

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I have the same shimmering problem.

Funny thing is it shimmers at times, and doesn't at other times.

So that sort of concludes the high possibility of the cause being my tires.

Coz' bad wheels or bad balancing will be shimmering or vibrating consistently.

I can't wait to finish up my fronts.

Oh, and btw, I have all matching OEM's (CSC2's)

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Tire/wheel balance is the right answer !!!

Vibration=balance

Pull/tire wear=alignment

IMHO of course

AND, don't take it to some cheap shop for the balance they really don't do high speed for the Porsches

AND, tires make a LOT of difference on the Porsche IMHO

Ed

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