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Both rear tyres worn on inner edge??

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YOUR RESEARCHBoth rear tyres worn on inner edge??

Leading reported evidence

Run standard 36/44 pressures (18" wheels) all the time too

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I ran standard 36/44 pressures (18" wheels) all the time too.
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Both rear tyres worn on inner edge??

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Leading evidence: 'Run standard 36/44 pressures (18" wheels) all the time too' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run standard 36/44 pressures (18" wheels) all the time too' (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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Set )

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Suggestion
After it was reset and new tyres fitted, I got perfectly even wear on 3 sets of rears (12000 miles each set).
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Both rear tyres worn on inner edge??

Set the tyres

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Suggestion
Properly set, the tyres on the Cup car will wear evenly, yet if you put 4 deg on a road car it will wear the inside edges very quickly.
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Both rear tyres worn on inner edge??

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Run standard 36/44 pressures (18" wheels) all the time too

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I ran standard 36/44 pressures (18" wheels) all the time too.
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Both rear tyres worn on inner edge??

Set )

No successful repair reported for this finding.

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Suggestion
After it was reset and new tyres fitted, I got perfectly even wear on 3 sets of rears (12000 miles each set).
Original post Read captured discussion
Both rear tyres worn on inner edge??

Set the tyres

No successful repair reported for this finding.

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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.

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Suggestion
Properly set, the tyres on the Cup car will wear evenly, yet if you put 4 deg on a road car it will wear the inside edges very quickly.
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Both rear tyres worn on inner edge??

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

911uk: 1 discussions

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POST 1 / ORIGINAL POSTEROriginal post

Just noticed both rera tyres are worn out on inner edge on my C4. Is this a common trait for these cars?

POST 2Original post

Afraid so.

POST 3Original post

It might be common, but it isn't right. Get your alignment checked, as you probably have too much toe-in or negative camber.

POST 4Original post

Why do you say that Richard? My 4S did the same on standard geo and a more sporty one, my GT3 definitely does but that's a common trait

POST 5Original post

Hi Richard, I'm a little surprised by this, as I understand it's the standard set up for the 996 (and Boxster for that matter).

POST 6Original post

Same tyre wear on my 996TT with fast road geometry.

POST 7Original post

When I bought my C2, the inner edges of the rears were worn much more than the outer. When the geometry was checked, it had too much negative camber. After it was reset and new tyres fitted, I got perfectly even wear on 3 sets of rears (12000 miles each set). I ran standard 36/44 pressures (18" wheels) all the time too. Despite others thinking they can do better, Porsche usually get this sort of thing right. For example, a race GT3 Cup car runs about 4 degrees of negative camber at the rear (depending on tyre make), whereas the road car runs 1.5 degrees. Properly set, the tyres on the Cup car will wear evenly, yet if you put 4 deg on a road car it will wear the inside edges very quickly. Just my 2p's worth.

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