14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH2001 996 rear end unstable
Reported or suspected cause
rear shocks
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Leading evidence: 'rear shocks' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'rear shocks' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Adjust bolt' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
I have replace rear lower control arms and alignment adjusting bolt.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
When you lower any car you change the angles of the suspension components.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
I have replace rear lower control arms and alignment adjusting bolt.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
Yeah, I think I'll at least replace my rear tires which are the worst as far as wear goes.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
14 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T225432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
my 996 has a very unstable feeling rear end when going over bumps. It's such a strange feeling. Like you have no control over the car for a moment. I have replace rear lower control arms and alignment adjusting bolt. Just had the car aligned but I wondering if the unevenly worn rear tires are causing this feeling. The adjustment bolt was seized and I recently got it removed so it can finally be aligned. The car has a 1" tein lowering spring it looks like. Do you think new tires will fix this or is there another part I can replace to make the rear ending more stable over bumps? Any help would be appreciated, thanks.
The rear of the tires are very bad due to the previous owner never getting it aligned properly because one of the rear camber adjustment bolts were seized into the rubber bushing. I got that taken care of and the car can finally be aligned now. It still has this weird feeling of the road inst perfectly flat. Seems as if the steering wheel goes on a slight angle while this weird feeling happens. The front are pirelli tires dated from 2005... the rear are not that old but the poor alignment has caused these tire to have very bad inside wear. I guess the best thing to try first is new tires but I'm wondering if it could be due to being lowered. The car drive great except for when going over bumps or imperfections. This sensation happens at 20-40 miles per hour all the time. Hate it
Okay, so I'll just throw this out there, although it may not be right.
When you lower any car you change the angles of the suspension components. One potential result is called "bump steer", that could explain what you are feeling in the steering wheel.
Lots of stuff out there that can explain it better than me, but this Rennline product description does a good job while keeping it simple:
http://www.rennline.com/Rennline-Fro...ctinfo/S75.10/
If someone lowered the car by just throwing on springs or springs and shock/struts and not thinking holistically, they may have introduced this behavior.
The good news is that if it is a bump steer issue, it's fixable.
You might want to take it to someone who has more experience with suspensions on lowered cars? Or find someone local who races or does DE in their 996, maybe?
Yeah, I think I'll at least replace my rear tires which are the worst as far as wear goes. Let me know what options I have please. The custest tires on my car are 285/30R18 93y bridgestone (Rear) and 235/35 ZR 18 86Y (Front). Are these the most cost effective/ performace effective tires or should I look at different options based on price?
I had this on my 2002, it was the rear shocks. would bounce, jump sideways on the expansion joints on the motorway. as for tyres I like the PS2. I find them ok on wear, and good for road noise and rain.
First thing would be to get all new tires of the same brand and tread. I find it hard to believe it would be a bumpsteer issue. My control arms sit about 3" off the ground and I have stock tie rods and rear links still and the bumpsteer isn't anything like what you're describing. Motor mounts made the biggest difference in my car, it felt especially unstable during hard acceleration.
I have no idea what those tires you mention are appropriate for - are you looking for a UHP summer tire, an all-season performance tire, a "touring" tire? The tire you buy only because it's what was in stock is almost guaranteed to be a disappointment.
This is a source reference. Confirm exact model applicability in the original material.
