12 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHRear end wiggle
Leading reported evidence
Replace tires
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 performed work without a confirmed outcome
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.
Performed · outcome unconfirmed
I had tires replaced on my wife's 2002 BMW 325CI and thought something was wrong.
Leading evidence: 'Replace tires' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'particular section of highway and those particular tires' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check date code' (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.
particular section of highway and those particular tires
Suggestion or failed attempt
No successful repair reported for this finding.
0
Identified cause
1
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 suspect 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.
Suspected cause
Even after rebalancing and then having a 2nd tire shop check it out, we figured out it was the particular section of highway and those particular tires.
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.
Check suspension components might also be worthwhile
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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
I haven't heard of motor mounts doing something like this, but checking the suspension components might also be worthwhile.
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
Its always had a slight rear end wiggle, most noticeable over concrete highway with rain grooves, but occasionally on road surfaces where the the surface is uneven and the camber changes frequently.
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
Its always had a slight rear end wiggle, most noticeable over concrete highway with rain grooves, but occasionally on road surfaces where the the surface is uneven and the camber changes frequently.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
particular section of highway and those particular tires
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect 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.
Suspected cause
Even after rebalancing and then having a 2nd tire shop check it out, we figured out it was the particular section of highway and those particular tires.
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.
12 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.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
OP had two new rears instaled and the issue persists...
Hi all.
Are the OE Michelin Sport Pilot PS2 tires known to have a noticeable wiggle over rain grooves at highway speed?
My car is a 2000 Carrera 2D Coupe. I've driven it a total of about 6500 miles.
Its always had a slight rear end wiggle, most noticeable over concrete highway with rain grooves, but occasionally on road surfaces where the the surface is uneven and the camber changes frequently. The front feels fine, no feedback in the steering wheel, just a little twich from the rear.
It felt to me like the toe was off. I removed the drivetrain when I bought the car to fix an intermix issue so I figured I probably just altered the alignment in the process.
I had two new rear tires mounted and had the dealer do an inspection/alignment and balance all 4 and it still does it.
Anyone else noticed this?
I'm also driving a 2000 on normal Super Sports and I don't have any wiggle - that I've noticed. Maybe some dodgy engine mounts that you notice on rougher road?
Nothing but PS2s for 16 years and 80k. No wiggle even in snow/ice (contrary to usage guidelines).
Check the date code on the tires. They may be old and have started to harden which greatly reduces their traction quality.
I think 5 would be a happy medium!! haha
I was on 10 years for a little bit when I swapped over my wheels from 997 back to standard 996, would not recommend that. I basically couldn't drive in the rain...
It's possible for certain road surfaces to grab the tire and try to move it in a direction. I had tires replaced on my wife's 2002 BMW 325CI and thought something was wrong. Went back to the tire shop, had them check everything. Even after rebalancing and then having a 2nd tire shop check it out, we figured out it was the particular section of highway and those particular tires.
OP had two new rears instaled and the issue persists...
My 2000 C2 had a bit of a rear twitch (but I was on Continentals) that was most noticable under hard accelleration, which made me think I should have swapped the motor mounts. Sold the car and ended up with a C4 that does not twitch at all, but also seems to have motor mounts in better condition...
Good luck figuring it out. If this is your first 996, maybe go on a test drive with another 996 in your area to compare.
Ah missed that. Posting when tired is hard
Still though, some shops have been known to use old stock so the dates are still worth a look anyway. Doubt they'd be more than 2 years old though...
I haven't heard of motor mounts doing something like this, but checking the suspension components might also be worthwhile. Particularly the control arm bushings?
Sounds like you're dealing with bump steer and believe it's coming from the back of the car. My C2 has bump steer, like most 996s. Some guys have added bump steer kits from aftermarket suppliers to counter this natural tendency of the 996.
If you post your alignment spec there are plenty of folks more educated than me that will verify if your alignment is correct.
This is a source reference. Confirm exact model applicability in the original material.
