Pelican Parts

2003 C4S Tires cupping

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH2003 C4S Tires cupping

Leading reported evidence

Set alignment up

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
There is a difference betwen setting alignment within factory spec range & setting the alignment up to ideal settings for how it is driven.
Original post Read captured discussion
2003 C4S Tires cupping

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Leading evidence: 'Set alignment up' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Set alignment up' (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.

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

Compare 1 other evidence results

Set alignment within factory spec range &

Suggestion or failed attempt

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
There is a difference betwen setting alignment within factory spec range & setting the alignment up to ideal settings for how it is driven.
Original post Read captured discussion
2003 C4S Tires cupping

Frequently discussed actions (2)

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

Set alignment up

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
There is a difference betwen setting alignment within factory spec range & setting the alignment up to ideal settings for how it is driven.
Original post Read captured discussion
2003 C4S Tires cupping

Set alignment within factory spec range &

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
There is a difference betwen setting alignment within factory spec range & setting the alignment up to ideal settings for how it is driven.
Original post Read captured discussion
2003 C4S Tires cupping

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.

Pelican Parts: 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: 20261026T083035Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi All, My Sister drives a 2003 C4S with the turbo wheel option...I think the rears are 285/35/19 and since she bought the car it has had a chronic rear tire cupping issue. It originally had Pirelli pZero tires and I sold her (Goodyear Dealer) a set of Goodyear Eagle F1 all seasons, she had the alignment checked at Tom Wood Porsche in Indianapolis and was told that the rear alignment had been out of specs but 8,000 miles later and her newer Goodyears are cupped on the inside edge again....Anyone have a similar experience? Thank you, Toby Maxwell 69 912 driver Tire smoking 98 Toyota Sienna

POST 2Original post

The lower the "rubber to void ratio" of the tread design especially on the inner edge the more prone the tire is to cupping. There is a difference betwen setting alignment within factory spec range & setting the alignment up to ideal settings for how it is driven.

This is a source reference. Confirm exact model applicability in the original material.