HELP! My Boxster shakes, but why??
Experiencing a strange shaking in my 986 (2003/70.000km) at certain speeds.
I previously wrote about my Falken winter tires that caused rattling in the rear suspension at around 130 kph, but now that I have changed to 18" carrera S summer rims and SP9000 rubber, I thought it would go away. The shaking is still there albeit in a different manner.
When I take the cold car out in the morning, it always feels like Im driving on rippled asphalt the first 1-2 km. Then it gradually fades.
But when the car is warm and I take it to the freeway it begins shaking mildly or vibrating from the rear at recurring intervals.
Example: going 130 kph. A mild but noticable shaking appears from the rear. It fades in and fades out again after 2 seconds. It's gone for 2 seconds then it comes back the same way.
Like in a rythm pattern.
The speed of the vibration changes if I go slower or faster.
Feels like vibrations in the chassis or from the engine, and I'm beginning to fear that it could be the engine suspension or some such.
Before taking it to the shop and getting raped I'd like to hear you guys' opinion on this.
Is it a vibration from the engine?
Could it be my suspension?
Anything to do with the wheels/brakes?
Any help would be appreciated.
I previously wrote about my Falken winter tires that caused rattling in the rear suspension at around 130 kph, but now that I have changed to 18" carrera S summer rims and SP9000 rubber, I thought it would go away. The shaking is still there albeit in a different manner.
When I take the cold car out in the morning, it always feels like Im driving on rippled asphalt the first 1-2 km. Then it gradually fades.
But when the car is warm and I take it to the freeway it begins shaking mildly or vibrating from the rear at recurring intervals.
Example: going 130 kph. A mild but noticable shaking appears from the rear. It fades in and fades out again after 2 seconds. It's gone for 2 seconds then it comes back the same way.
Like in a rythm pattern.
The speed of the vibration changes if I go slower or faster.
Feels like vibrations in the chassis or from the engine, and I'm beginning to fear that it could be the engine suspension or some such.
Before taking it to the shop and getting raped I'd like to hear you guys' opinion on this.
Is it a vibration from the engine?
Could it be my suspension?
Anything to do with the wheels/brakes?
Any help would be appreciated.
)
