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2000 996 Carrera (2) Coupe 18" wheels: PSS10


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When the PSS10 kit was installed, the car was lowered by 1 inch at the front and by 3/4 inches at the back. The car was corner balanced and the wheels aligned. The front shock absorbers are set on position '2' and rear shock absorbers are set on position '4'. I have Sumitomo HTR Z II tires.

When I go over a spread breaker diagonally, I can hear a noise coming from each wheel as each wheel goes over the breaker. When I drive at speed on a bumpy road, I can occasionally hear the same noise from a wheel (not always the same). We inspected the suspensions and everything seems normal.

Has anybody experienced the same problem? What is the cause of it?

Many thanks

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