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extreme tyre wear one side at the rear - Geometry Issue?

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YOUR RESEARCHextreme tyre wear one side at the rear - Geometry Issue?

Leading reported evidence

Replace rear michelin ps2's

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Unsuccessful attempts: 1
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Performed · outcome unconfirmed · Original poster
I replaced my rear Michelin PS2's today on my C4S and got the shock of my life.
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extreme tyre wear one side at the rear - Geometry Issue?

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Clean back pu i was

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Suggestion · Original poster
Last week when I was cleaning the back PU I was on my back peering at the tyres and saw on the nearside wheel and on the very inside of that, tyre baldness on the tread.
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extreme tyre wear one side at the rear - Geometry Issue?

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Leading evidence: 'Replace rear michelin ps2's' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean back pu i was' (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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Clean back pu i was

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Suggestion · Original poster
Last week when I was cleaning the back PU I was on my back peering at the tyres and saw on the nearside wheel and on the very inside of that, tyre baldness on the tread.
Original post Read captured discussion
extreme tyre wear one side at the rear - Geometry Issue?

Frequently discussed actions (2)

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Clean back pu i was

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
Last week when I was cleaning the back PU I was on my back peering at the tyres and saw on the nearside wheel and on the very inside of that, tyre baldness on the tread.
Original post Read captured discussion
extreme tyre wear one side at the rear - Geometry Issue?

Replace rear michelin ps2'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
I replaced my rear Michelin PS2's today on my C4S and got the shock of my life.
Original post Read captured discussion
extreme tyre wear one side at the rear - Geometry Issue?

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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

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Generation: 20261026T165820Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I replaced my rear Michelin PS2's today on my C4S and got the shock of my life. Last week when I was cleaning the back PU I was on my back peering at the tyres and saw on the nearside wheel and on the very inside of that, tyre baldness on the tread. The offside was worn enough to alert me that they were ready to replace but what struck me was the uneven wear between the two tyres. I was totally shocked however when I actually saw the tyre off the car in the tyre fitters "" you could see the steel wire poking through the rubber just on the crown of the tyre wall and tread area. Think back to Lewis Hamilton in China last season, just before the front let go and you have a rough idea of what I was looking at. Shame on me for not paying greater attention but in mitigation if I hadn't been on the deck I would never have seen this problem as it couldn't be detected from the wheel arch because of the width of the 295 on the 4s. I am thinking Geometry "" can anyone confirm this or suffered similar experience "" I haven't tracked the car either. RB

POST 2Original post

Geometry - guaranteed. You should get perfectly even tyre wear if the geometry is set to the factory settings. You'll also notice a big difference in the handling. Sounds like you have too much rear toe-in, or too much negative camber, or both.

POST 3 / ORIGINAL POSTEROriginal post

Thanks Richard, I was hoping it was something as straightforward as the geometry. Had it done on my previous car and you're right, the handling is improved. RB

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