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Body Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

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YOUR RESEARCHBody Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace more often than our passenger cars

Performed · outcome unconfirmed

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Unsuccessful attempts: 1
Discussions

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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

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Performed · outcome unconfirmed
I think what we're all learning is that our cars require good quality high speed tires, and that the tires we choose must be balanced properly and replaced more often than our passenger cars.
Original post Read captured discussion
Body Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed work

Replace 17's

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0
Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

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Suggestion
I'm ready for a set now, and I'm replacing the 17's with 18's while I'm at it.
Original post Read captured discussion
Body Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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Leading evidence: 'Replace more often than our passenger cars' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 17's' (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.

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1 matching discussions · 2 captured posts examined · 0 partial discussions

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Replace 17's

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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'm ready for a set now, and I'm replacing the 17's with 18's while I'm at it.
Original post Read captured discussion
Body Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Set now, and i'm

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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'm ready for a set now, and I'm replacing the 17's with 18's while I'm at it.
Original post Read captured discussion
Body Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace 17's

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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'm ready for a set now, and I'm replacing the 17's with 18's while I'm at it.
Original post Read captured discussion
Body Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace more often than our passenger cars

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 think what we're all learning is that our cars require good quality high speed tires, and that the tires we choose must be balanced properly and replaced more often than our passenger cars.
Original post Read captured discussion
Body Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Set now, and i'm

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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'm ready for a set now, and I'm replacing the 17's with 18's while I'm at it.
Original post Read captured discussion
Body Shake - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Coverage and how to read this overview

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.

2 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

986Forum: 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: 20261026T122219Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I found this interesting post today and thought I would share with this forum. It is a good question. Here is the question and answer: QUESTION : I recently had the good fortune to make multiple business commutes between Albquerque and Colorado Springs; about 400 miles of mostly wide open and lightly traveled interstate. Consequently I was able to explore some triple digit runs over extensive miles. I noticed that the car experienced a consistant vibration throughout the entire chassis between 90MPH and 100MPH. Above that and up to it's limit it was very smooth, as it was below 90MPH. The best way to describe it would be a one second shimmy, then 1 second smooth; one second shimmy, 1 second smooth etc. etc.; very periodic in nature. While running at the affected speeds I could lift off the throttle and coast, even put the car in nuetral with engine at idle and it would continue the shimmy until the road speed dropped below 90MPH; so I'm thinking its not related to the engine. Is this just a phnomenon of high speed driving, perhaps related to the aerodynamics of the car? ANSWER This is do to your tires. The oscillation that you describe is a harmonic vibration going back and forth in the car. Your tires are either mismatched front to rear by brand, type or speed rating. Another possibility is they are worn low in the rear or one of the rear tires is defective. Scott Slauson - PCA WebSite - 12/2/2005

POST 2Original post

I think what we're all learning is that our cars require good quality high speed tires, and that the tires we choose must be balanced properly and replaced more often than our passenger cars. Porsches give the driver lots of road feedback and without good tires and proper balancing, we'll experience far more vibration from the front and rear. When I bought my boxster, I assumed I'd be buying new tires every 18 months. I'm ready for a set now, and I'm replacing the 17's with 18's while I'm at it. I'm prepared for a less comfortable ride on 18's though, but more precision handling. The day I get my new rims and tires, and they're properly balanced at a speed shop, you can be sure I will post what it's like to drive the car up to 120 mph with that special kind of feeling one has with a brand new Porsche. Well, at least that's my hope!

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