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Wrong tires on 04 C4S?

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

Discussion summary

YOUR RESEARCHWrong tires on 04 C4S?

Leading reported evidence

Replace rears

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Suggestion

Fast forward a few years and I'm replacing the rears with new Sumis (the fronts are fine).

Wrong tires on 04 C4S?
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Leading evidence: 'Replace rears' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace rears' (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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Replace those i'd consider going

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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.

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Suggestion

Enjoy the car and don't worry about it, but when it comes time to replace those I'd consider going to something a bit nicer.

Wrong tires on 04 C4S?

Replace whole

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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
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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 thought about replacing the whole set with PS2s but I've had no issues with them at all (noise, handling, etc.).

Wrong tires on 04 C4S?

Set pilot sports are $1,400

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Reported fixes
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Unsuccessful attempts
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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
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion · Original poster

Sumi's are $500 for the set, Pilot Sports are $1,400 for the set.

Wrong tires on 04 C4S?

Set with ps2s

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 thought about replacing the whole set with PS2s but I've had no issues with them at all (noise, handling, etc.).

Wrong tires on 04 C4S?
Frequently discussed actions (5)

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

Replace rears

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

Fast forward a few years and I'm replacing the rears with new Sumis (the fronts are fine).

Wrong tires on 04 C4S?

Replace those i'd consider going

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

Enjoy the car and don't worry about it, but when it comes time to replace those I'd consider going to something a bit nicer.

Wrong tires on 04 C4S?

Replace whole

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 thought about replacing the whole set with PS2s but I've had no issues with them at all (noise, handling, etc.).

Wrong tires on 04 C4S?

Set pilot sports are $1,400

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

Sumi's are $500 for the set, Pilot Sports are $1,400 for the set.

Wrong tires on 04 C4S?

Set with ps2s

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 thought about replacing the whole set with PS2s but I've had no issues with them at all (noise, handling, etc.).

Wrong tires on 04 C4S?
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.

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

  • Rennlist: 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: 20261027T022239Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

So the previous owner of this car put sumitomo 295/30 tires on the back wheels. Today I was pulling the wheels to give things a good cleaning and the tire figment doesn't look right. What do you guys think of these pics? These tires are sitting on sporttechno wheels. Inside edge of rim Inside edge of rim Outside edge.

POST 2Original post

yeah that doesn't look good - previous owner thought he owned a 944 taking the cheap way out.

POST 3 / ORIGINAL POSTEROriginal post

So I just looked up tires on Tirerack for $hit$ and giggles and now I see why... Sumi's are $500 for the set, Pilot Sports are $1,400 for the set. Wonderful... wonder how long the Sumi's will last...

POST 4Original post

just don't make any turns and you'll be fine actually years ago i put sumi's on my ferrari 308 - they are a good tire just want to make sure fitment is proper - i'm surprised the tire shop mounted those on your wheels

POST 5 / ORIGINAL POSTEROriginal post

I'm finding this car was a bit neglected by the last owner. Every time I work on it, clean it or drive it, I find something else that needs attention. But not to worry, I'll nurse her back into shape.

POST 6Original post

in all seriousness i would not take turns to the extreme - perhaps someone will chime in who is more familiar with the tire mounting issue

POST 7Original post

Looks fine to me. In general, there is a fair bit of wiggle room on tire sizes, and while that does have a slightly "stretched" appearance, it shouldn't have any negative consequences. There is even variation in width in tires of the same size - for my last car, if you stacked the pilot super sports I had next to the potenza RE-71Rs, the track-focused tire stack was a few inches taller. Enjoy the car and don't worry about it, but when it comes time to replace those I'd consider going to something a bit nicer.

POST 8Original post

Ken, this normal for the sumi 295 on 11" wheel.

POST 10Original post

Mine look more stretched then that.. but I have a 265 on a 10" wheel..

POST 11 / ORIGINAL POSTEROriginal post

Thanks guys for the feedback. I will certainly continue to enjoy the ride!

POST 12Original post

FWIW, I've got the Sumis on my C4S and they're great. I would have happily bought PS2s for it but decided to give the Sumis a shot at a fraction of the price after reading all of the great reviews. In fact, for the price, I figured I'd just eat some of the cost, throw them on eBay and replace them with PS2s if I ended up hating them. Fast forward a few years and I'm replacing the rears with new Sumis (the fronts are fine). I thought about replacing the whole set with PS2s but I've had no issues with them at all (noise, handling, etc.). Yes, they're less expensive than PS2s...a LOT less expensive...but that doesn't necessarily translate to bad. -Eric

POST 13Original post

Quotes source post: 13216189

LOL !! put the bong down...

POST 14Original post

You can get away with a bit of stretch on a wide wheel like the 996's rears...the biggest drag is the amount of curb rash one accumulates with a stretch. I need to go wider on my next set - BEFORE I pay to get my rims refreshed.

POST 15Original post

Quotes source post: 13216189

I don't understand why "extreme turning" would be an issue? But I guess I don't really know what "extreme turning" actually IS , so that ignorance on my part should probably be addressed before attempting to understand why it must be avoided for specific wheel/tire pairings. Everybody to the limit...everybody fhqwhgads!

POST 16Original post

I like the Sumis and the fittment is fine. Drive them like you stole them

POST 17Original post

Quotes source post: 13216669

agree extreme turning is weak - meant hard turning - i've never seen tires not meet up with the wheel edges before - sounds like it's in style now? my bad they don't give you an inch on this god damn forum - no wonder KK lost his mind

POST 18Original post

Heh. Just poking the bear, Groov. As far as the rim exposure on the inside of the wheels - I think this is one of the reason the factory wheels on 996's get so ripped up at automated car washes. There's a whole lot of unprotected wheel hanging out...

POST 20Original post

Just FYI OE sizes are 225/40/18 and 295/30/18 for the C4S. Some sites also give the option of 235/40/18 on the front, I had Sumis HTZ's on my old 994S2 and hated them, but the HTZ III is getting good reviews except for wear.

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