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PSM engaging after tire change

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHPSM engaging after tire change

Leading reported evidence

Check tire pressure and i had 37/46

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
I checked tire pressure and i had 37/46 when warm.
Original post Read captured discussion
PSM engaging after tire change

Read full discussion summary

Leading evidence: 'Check tire pressure and i had 37/46' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'tires' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check tire pressure and i had 37/46' (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 · 7 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace rear tires only

Performed · outcome unconfirmed

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
I recently replaced the rear tires only on my C4S.
Original post Read captured discussion
PSM engaging after tire change

tires

Suggestion or failed attempt

No successful repair reported for this finding.

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Identified cause: 1
Suspected cause: 0
Reported fixes

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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 · Original poster
The first drive from getting them installed was when i had PSM kick in and i thought it was due to new tires but they should be scrubbed in by now.
Original post Read captured discussion
PSM engaging after tire change

Check with my durumetric scanner tonight

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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 will check with my Durumetric scanner tonight.
Original post Read captured discussion
PSM engaging after tire change

Replace 4 tires same time

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
On a AWD car you need to replace all 4 tires same time.
Original post Read captured discussion
PSM engaging after tire change

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.

Check tire pressure and i had 37/46

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
I checked tire pressure and i had 37/46 when warm.
Original post Read captured discussion
PSM engaging after tire change

Check with my durumetric scanner tonight

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 will check with my Durumetric scanner tonight.
Original post Read captured discussion
PSM engaging after tire change

Replace 4 tires same time

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
On a AWD car you need to replace all 4 tires same time.
Original post Read captured discussion
PSM engaging after tire change

Replace rear tires only

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
I recently replaced the rear tires only on my C4S.
Original post Read captured discussion
PSM engaging after tire change

Use rear tires

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
You can�t use new rear tires with worn front tires on a C4S.
Original post Read captured discussion
PSM engaging after tire change

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.

tires

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 · Original poster
The first drive from getting them installed was when i had PSM kick in and i thought it was due to new tires but they should be scrubbed in by now.
Original post Read captured discussion
PSM engaging after tire change

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.

7 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: 20261026T091943Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I recently replaced the rear tires only on my C4S. Since then i have had several occasions where the PSM warning light has come on and the traction control has engaged. The tires are the same Michelin Pilot Sport 4S as were on there before. When PSM has engaged i wasnt really pushing the car that much but going through some tight turns on my way home. Any clues on what might be going on. I checked tire pressure and i had 37/46 when warm.

POST 2Original post

How many miles have you put on them? I believe brand new tires are more slippery at first from chemicals in manufacturing. Article from continental: https://www.continental-tires.com/products/b2c/tire-knowledge/braking-with-new-tires/

POST 3Original post

You can�t use new rear tires with worn front tires on a C4S. They will have a different diameter on them and the computer that reads the wheel speeds for traction and stability control see that difference and freak out. On a AWD car you need to replace all 4 tires same time.

POST 4Original post

Yes and no. There is a range of about an 1" in difference that the psm/abs will tolerate. find a scanner that can read the speed sensors and graph the results.

POST 5 / ORIGINAL POSTEROriginal post

The rears have ~150 miles on them. The first drive from getting them installed was when i had PSM kick in and i thought it was due to new tires but they should be scrubbed in by now. I will check with my Durumetric scanner tonight.

POST 6Original post

I suspect there is a loose speed sensor connection or one was damaged/failed when the tires were changed.

POST 7Original post

Quotes source post: 19960650

You may need more miles. I replaced my rear tires (with the same size, brand, model) and the rear was unnervingly squirrelly for the next 600 miles. It completely disappeared around 1000 miles.

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