11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHTyre sizes 996.1
Leading reported evidence
Run 295/30/18 (i.e
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
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
Find out exactly where it is rubbing (will be worse with passengers) and also consider rolling the inner arches, changing the rear camber to be slightly more negative, adding a perch spacer to raise the rear suspension all cheaper than changing tyres if they are still have plenty of life left.
Leading evidence: 'Run 295/30/18 (i.e' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'same wheel as the op)' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace rear camber' (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.
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
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Performed · outcome unconfirmed
I'm running Goodyear Eagle F1 5s in 265/35/18 with no rubbing issue.
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
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Performed · outcome unconfirmed
failing that it may have been done by a previous owner, but as far as I can gather previous owners only ran the standard 18" Carrera 5 spoke wheels.
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
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Suspected cause
I'm not sure it helps, but I've not had any issues with rubbing on my 996.2 C2 which has a set of Group4 DP18's (probably the same wheel as the OP).
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
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Suggestion
Find out exactly where it is rubbing (will be worse with passengers) and also consider rolling the inner arches, changing the rear camber to be slightly more negative, adding a perch spacer to raise the rear suspension all cheaper than changing tyres if they are still have plenty of life left.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Replace rear camber
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
Find out exactly where it is rubbing (will be worse with passengers) and also consider rolling the inner arches, changing the rear camber to be slightly more negative, adding a perch spacer to raise the rear suspension all cheaper than changing tyres if they are still have plenty of life left.
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.
11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 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: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi, i've got a 996.1 c2 with group4 fuch style wheels 18 x 10 rears that sit flush with arch due to ET. I have recently lowered the car from m030 height to gt3 height with koni active dampers and H&R springs. I am now getting a rub issue when pushing on.
Currently I have 275/35/18s Michelin PS4 on rears. I would like to stick to Michelins and wonder if i'm better getting 265/35/18s or 285/30/18s. Would the stretch on the 265s be better than the 285s even though the 265s have a slighter higher side wall?
Any advice appreciated before I spend cash potentially without resolving issue.
Where are you rubbing?
If you are catching the outer edge of the sidewall on the inner edge of the arch, then 265 would be better.
If you are simply hitting the arch on the actual width of the tyre then I doubt reducing it 5mm that side is going to make a difference.
There is not much stretch on a 265 on a 10 wide wheel.
Have you got the 41mm offset rears?
If so, I doubt lowering will allow you to get away with much, this has been discussed at length on the US forums, it seems arch rolling is pretty much the only way to go.
Search for widebody wheels on narrow body 996.
https://rennlist.com/forums/996-forum/1266200-wheel-offset-996-1-narrow-body.html
Take some pics from above so we can see?
Sounds like it could be the ET causing issues.
I run 295/30/18 (i.e. 996 GT3 size) on an 11" without any rubbing
Rear: 11x18 ET60 295/30/18
Front 8.5x18 ET45 235/40/18
I guess there is potential to look at camber through adjustments or coffin spacers?
I think those group 4 Fuchs were a 41mm offset, well they were available in 41mm anyway.
If a 275/35 is rubbing, will 3mm less sidewall and 5mm less width suddenly not rub? It may do, but I would like to see some pics.
I've been down this road after lowering with 295 tyres and wheel spacers.
Find out exactly where it is rubbing (will be worse with passengers) and also consider rolling the inner arches, changing the rear camber to be slightly more negative, adding a perch spacer to raise the rear suspension all cheaper than changing tyres if they are still have plenty of life left.
I'm not sure it helps, but I've not had any issues with rubbing on my 996.2 C2 which has a set of Group4 DP18's (probably the same wheel as the OP).
The car is lowered to X74 with Bilstein PSS10's, with the standard 285 Michelin PS2 N rated tyres.
Having said that, the arches do seem to have a small section that's been rolled. I'm sure I read somewhere that some cars came like this, perhaps only 996.2's? failing that it may have been done by a previous owner, but as far as I can gather previous owners only ran the standard 18" Carrera 5 spoke wheels.
I've also got he Gp4 Fuchs on my 996.1 C2, which is lowered to X74 height. I'm running Goodyear Eagle F1 5s in 265/35/18 with no rubbing issue. Not sure if that helps ?
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