Porsche Club GB

More on tyre wear.......

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YOUR RESEARCHMore on tyre wear.......

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Check wear

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Performed · outcome unconfirmed · Original poster
In the ongoing search for the perfect tyre pressures (32psi rear and 28 front is looking good) I have checked the wear on the front of my C4S today and found the following wear tendancy.
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More on tyre wear.......

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Leading evidence: 'Check wear' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'bit low' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Check wear' (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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bit low

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28F 32R is probably a bit low for trackdays - I would aim for 30F 34R for a normal road tyre, measured hot.
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More on tyre wear.......

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Check wear

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Performed · outcome unconfirmed · Original poster
In the ongoing search for the perfect tyre pressures (32psi rear and 28 front is looking good) I have checked the wear on the front of my C4S today and found the following wear tendancy.
Original post Read captured discussion
More on tyre wear.......

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.

bit low

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
28F 32R is probably a bit low for trackdays - I would aim for 30F 34R for a normal road tyre, measured hot.
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More on tyre wear.......

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Porsche Club GB: 1 discussions

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POST 1 / ORIGINAL POSTEROriginal post

In the ongoing search for the perfect tyre pressures (32psi rear and 28 front is looking good) I have checked the wear on the front of my C4S today and found the following wear tendancy. The tyres are worn symetrically- the wear is from the inside of the tyre evening out across the breadth of the tyre, ie it is near the wear indicator on the inner part of the tread and the wear reduces across the face of the tyre. Is this characteristic of correct tyre wear on the front of a 911 or is the tracking/geomerty questionable......? I have it in my mind that it is probably as it should be, does anyone want to rain on my parade?

POST 2Original post

when i picked my car up in august, the dealer had on the hand over book that they reccomend 32 rear, 28 front as they have found that these are the best for optimum performance, i have over the few months i have had the car tried various different pressures, the ones that porsche reccomend 44, 36 made the car feel very unsettled, tried some other variants, but finally reverted back to what the dealer had reccomended, want to try a couple of track days this year to get to grips with what the car can actually do[8D] and i feel that 32,28 will be spot on for the track, but seeing as i have only been in porsche ownership for a few months, i would love to know what porsche experts think?

POST 3Original post

Having tried at least 6 different makes/models of tyres over the last few years, one point that people often miss is that there is no one "correct" pressure that applies to all tyres. IME, Michelin PS2's & Toyo R888's like to have a bit more pressure than Pirelli Corsa's. Pilot Sport Cup's like the lowest pressure of all. I favour a bit more pressure than 28/32 but if that works for you, fine. The OP's wear characteristics sound perfectly normal for road usage. 28F 32R is probably a bit low for trackdays - I would aim for 30F 34R for a normal road tyre, measured hot. It's all about feel though, so go with what works for you.

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