Porsche Club GB

19" wheel offsets

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH19" wheel offsets

Leading reported evidence

Install wheel is 1" larger

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
So fitted wheel is 1" larger on diameter and 7mm less clearance to suspension.
Original post Read captured discussion
19" wheel offsets

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Leading evidence: 'Install wheel is 1" larger' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'wheel bearing or diff' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Install wheel is 1" larger' (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.

Read captured replies

1 matching discussions · 3 captured posts examined · 0 partial discussions

Compare 3 other evidence results

wheel bearing or diff

Suggestion or failed attempt

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
The noise is more likely a wheel bearing or diff.
Original post Read captured discussion
19" wheel offsets

Replace note

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 · Original poster
Last weekend was its first decent run and I have started to notice a constant whirring noise that changes note with speed but not if you dip the clutch.
Original post Read captured discussion
19" wheel offsets

Use spacers

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 · Original poster
Has anyone else fitted these wheels to a 996 and if so did you have to use spacers on the front?
Original post Read captured discussion
19" wheel offsets

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.

Install wheel is 1" larger

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
So fitted wheel is 1" larger on diameter and 7mm less clearance to suspension.
Original post Read captured discussion
19" wheel offsets

Replace note

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 · Original poster
Last weekend was its first decent run and I have started to notice a constant whirring noise that changes note with speed but not if you dip the clutch.
Original post Read captured discussion
19" wheel offsets

Use spacers

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 · Original poster
Has anyone else fitted these wheels to a 996 and if so did you have to use spacers on the front?
Original post Read captured discussion
19" wheel offsets

Reported and suspected causes (1)

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

wheel bearing or diff

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
The noise is more likely a wheel bearing or diff.
Original post Read captured discussion
19" wheel offsets

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.

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

Porsche Club GB: 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: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I recently bought a 2004 C4S which came with 19" 997 Carrera S wheels. Last weekend was its first decent run and I have started to notice a constant whirring noise that changes note with speed but not if you dip the clutch. Quick look round the interweb leads me to think its wheel bearings, but having a look tonight the front wheels are frighteningly close to the suspension mounts on the inside edge. There are spacers on the rear but nothing on the front and I am now wondering if they are rubbing? Has anyone else fitted these wheels to a 996 and if so did you have to use spacers on the front? Wheels are stamped BBS RD 209 so I am presuming they are OEM. Size is 8J x 19H2 ET57 with a Continental sport contact tyre at 235/35 ZR 19 If I do need spacers any advice on what size would be greatly appreciated, I could be completely wrong and it is bearings, but would like to start with the simple stuff first. Craig

POST 2Original post

Standard front size is 8jx18 ET50 So fitted wheel is 1" larger on diameter and 7mm less clearance to suspension. So unless you can see rub marks on the tyre or leg then should be fine. The noise is more likely a wheel bearing or diff.

POST 3 / ORIGINAL POSTEROriginal post

Thanks, noise was a wheel bearing so that's getting fixed whilst they add some 7mm spacers as well.

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