Rear end "bouncing"
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Rear end "bouncing"
I just took a 200 mile drive on 95 and the whole time it felt like the rear end was going over a series of small bumps. Nothing that felt dangerous or out of control, just a constant bouncing that seemed to increase with speed.
Figuring that the 911 may be more sensitive to out of balance rear wheels with all that weight back there but wondering if there is something else that I should be looking in to...
Figuring that the 911 may be more sensitive to out of balance rear wheels with all that weight back there but wondering if there is something else that I should be looking in to...
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From: Gone. On the Open Road
How many miles since delivery? If very recently delivered make sure the shipping blocks have been removed from the springs.
If new behavior, then looking for wheel balance issues, as above is good advice. Also:
Are your tire pressures set correctly?
If your's is PASM-equipped did you accidentally put the car in sport or sport+ mode?
If new behavior, then looking for wheel balance issues, as above is good advice. Also:
Are your tire pressures set correctly?
If your's is PASM-equipped did you accidentally put the car in sport or sport+ mode?
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Joined: Nov 2013
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How many miles since delivery? If very recently delivered make sure the shipping blocks have been removed from the springs.
If new behavior, then looking for wheel balance issues, as above is good advice. Also:
Are your tire pressures set correctly?
If your's is PASM-equipped did you accidentally put the car in sport or sport+ mode?
If new behavior, then looking for wheel balance issues, as above is good advice. Also:
Are your tire pressures set correctly?
If your's is PASM-equipped did you accidentally put the car in sport or sport+ mode?
It has PASM and PDCC. Put it in sport and sport+ (and hit PDCC separately) and it didnt seem to make a difference with this, so it seemed like an out of balance wheel to me too
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Well, at the very least it seems more noticeable at speed and in the monotony of 95, but I doubt it was the road itself as I drove on the NJ Turnpike and 95 through Delaware and Maryland which each have different surfaces...
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Joined: Jul 2006
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From: Los Angeles, CA
The reason I asked is because I do feel similar bouncing on some specific roads here in SCAL, but I'm not worried because I drove various Porsches over the years and all did experience pretty much same behavior, also I noticed it more with tire inflated at full spec. Did you drove your car before on this particular road and it was ok? If so, yeah check the balance of the wheels and the tire pressure, if that does not help, take it to the dealer for inspection
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Joined: Nov 2013
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The reason I asked is because I do feel similar bouncing on some specific roads here in SCAL, but I'm not worried because I drove various Porsches over the years and all did experience pretty much same behavior, also I noticed it more with tire inflated at full spec. Did you drove your car before on this particular road and it was ok? If so, yeah check the balance of the wheels and the tire pressure, if that does not help, take it to the dealer for inspection