pbxtr!!

My '06 997 cabrio is not solid as I expected it to be. It may be because I previously had "softer" Boxsters and BMWs. Or maybe there is a loose / worn rear bushing that I can not find.

It rides good over most road imperfections but when I drive over the lane reflectors my rear suspension does not seem to adsorb the shock as I think a quality sports car should.

I feel it makes too loud / sharp a thump, seemingly from where the rear struts mount to the body on top. Both sides make the same thump by the way.

I bought the car over two years ago with 35K miles and now is nearing 50K. The condition has been there since day one.

Is this normal?

DesmoSD

How are your tires? Did you check for any leaks? At 50K you might be due for new shocks.

Petza914

That's actually pretty normal for the 911. You have a wider, flatter, rear tire than you had on your Boxster with a lower profile sidewall and the engine further rearward, which means the suspension back there is also a little stiffer to support that extra weight. Depending on how old your tires are, the rubber may be less flexible than ideal, which could make them harder and make this effect harsher. Also, are you running the proper pressure. I assume you're like the rest of us that usually have a pretty light load in the 911 so the pressures you should be using are the lower pair of numbers, not the fully loaded numbers which are higher. I run 35 F / 40 R in my car and 33 F / 38 R in my wife's car. If you're considerably higher than these, try these #s and see what you think. The F to R pressure differential is important, so don't just set them all to 35 PSI.

ADias

Normal.

rw229

911Gr8tness

I've owned a 06 C2S coupe, and now a '06 C2S Cab. The coupe when going over rough patches on the road, you would feel it through the dash sometimes quite hard. The cab is surprisingly quiet.

The rear noise from the struts could be a worn strut top mount bushing, I recently starting hearing it. Just replaced mine along with new pro-kit springs and the noise is gone.

ADias

I said it is normal, but should have added that lane deflectors were designed for large cars with soft suspensions and high sidewall tires... Road construction and maintenance has deteriorated and that is the problem.