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Porsche Club GB

17" 0r 18" Wheels

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10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH17" 0r 18" Wheels

Leading reported evidence

Run 911 sc's

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
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

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 · Original poster

The reason I asked about 17" wheels is many years ago I ran 911 sc's which were available as non sport and sport the later had lower profile tyres, much more grip and much more noise, the non-sport higher profile tyres good grip less noise and much more comfort.

17" 0r 18" Wheels
Frequently discussed work

Replace 18" wheels

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

I am considering replacing my 18" wheels with smaller 17" to allow for a higher profile tyre which in theory reduce the tyre noise.

17" 0r 18" Wheels
Read full discussion summary

Leading evidence: 'Run 911 sc's' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 18" wheels' (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 · 10 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace 18" wheels

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 · Original poster

I am considering replacing my 18" wheels with smaller 17" to allow for a higher profile tyre which in theory reduce the tyre noise.

17" 0r 18" Wheels

Run 17

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 run 17 on my Boxster and the rears where needing replaced and Porsche said I could not mix NI and NO on the car and as far as makes was told they had to be all the one make ,hence I now have a near new set of fronts Conti Sport 2 205/55 ZR 17 91Y which I cannot use as rears are not made in NO rating anymore

17" 0r 18" Wheels
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 18" wheels

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

I am considering replacing my 18" wheels with smaller 17" to allow for a higher profile tyre which in theory reduce the tyre noise.

17" 0r 18" Wheels

Run 17

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 run 17 on my Boxster and the rears where needing replaced and Porsche said I could not mix NI and NO on the car and as far as makes was told they had to be all the one make ,hence I now have a near new set of fronts Conti Sport 2 205/55 ZR 17 91Y which I cannot use as rears are not made in NO rating anymore

17" 0r 18" Wheels

Run 911 sc's

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 · Original poster

The reason I asked about 17" wheels is many years ago I ran 911 sc's which were available as non sport and sport the later had lower profile tyres, much more grip and much more noise, the non-sport higher profile tyres good grip less noise and much more comfort.

17" 0r 18" Wheels
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.

10 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: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I am considering replacing my 18" wheels with smaller 17" to allow for a higher profile tyre which in theory reduce the tyre noise. Has anyone tried this and with what success?

POST 2Original post

What tyre noise ? What tyres are you running ? I would stick with 18's. 17's look to small IMO.

POST 3Original post

Tyres louder than engine = something very odd with tyres

POST 4Original post

Stick with the 18" wheels. The look is far nicer! You shouldn't be getting road noise to this degree???!!! As you just bought it go straight back to dealer and scream and shout!

POST 5 / ORIGINAL POSTEROriginal post

All 911's that I have owned, have and do suffer from tyre noise, it is just to what degree you accept it. The worst tyres for it I have found have been Michelin, however they are better on mileage. Pirelli I found to be the queitist and my car currently has Bridgestone rear and Michelin front which again I like all 4 to be one make so I will be changing them quite soon. The reason I asked about 17" wheels is many years ago I ran 911 sc's which were available as non sport and sport the later had lower profile tyres, much more grip and much more noise, the non-sport higher profile tyres good grip less noise and much more comfort. I am sure like many other 911 owners I would run out of talent long before our cars ran out of grip so comfort is important to me when touring.

POST 6Original post

Hello Michael I have some 996 C4 17" wheels which are original with a bit of wear left in the tyres only looking for £450 for the set they are very original and in excellent condition please just call or email me if you are intrested. Tel 07841 51 592 or [email removed] Just a thought Phil

POST 7Original post

I've had several sets of Michelins on this and previous cars and not had a problem with noise

POST 8Original post

I have 17" ... was concerned about ride quality on our poor suffolk roads - a quick chat with Peter Morgan suggested 17" would be more compliant than 18", so that's what I have. Haven't noticed any abnormal tyre noise with 17" ones (I run PS2's) and, of course, the replacement tyre cost is less.

POST 9Original post

I noticed you said you had 2 brands of tyres on your car I though this was a no no I run 17 on my Boxster and the rears where needing replaced and Porsche said I could not mix NI and NO on the car and as far as makes was told they had to be all the one make ,hence I now have a near new set of fronts Conti Sport 2 205/55 ZR 17 91Y which I cannot use as rears are not made in NO rating anymore

POST 10Original post

I have 18"s on a C2 996, when I bought it it had Michellin's all round, I changed to Pirelli P Zero Rossos at the end of last year. The car is much quiter at all speeds but it feels a little "twitchier" over bumps at speed. I am amazed at the difference.

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