Odd tyre wear

[Midlifecrisis]

My Taycan has been in due to a heater failure and while there they did the usual “health check”. The front tyres are wearing evenly but the rear tyres have both worn disproportionately on the outer edges. Such that they are recommending replacement at just over 7000 miles. To me, it looks like the camber is set incorrectly which has caused the outer edges of the rear tyres to wear. I have asked the question and am awaiting a response. My previous 4S on PS4 tyres didn’t do this.
Taycan Turbo on Pirelli Cinturato P7 tyres.
Image of the report below.
By the way, Porsche Tewkesbury sorted out my heater failure pretty quickly (just over a week) - I left it with them while I was away on holiday.

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[RAHRCR]

This is concerning from both a cost and environmental standpoint. Unless we are racing, we should all be able to get at least 20K miles on a set on passenger car tires.

 

[WasserGKuehlt]

Outside wear (edit) on the rears (end edit) is unusual, sounds like a toeing issue. There are several threads around here on uneven wear, with the inner side wearing out faster. My rears are almost gone at 16k mi.

 

[cityhpper]

Outside wear (edit) on the rears (end edit) is unusual, sounds like a toeing issue. There are several threads around here on uneven wear, with the inner side wearing out faster. My rears are almost gone at 16k mi.

Agreed. Loks like too much toe in at the rears, which is unusual considering car lowers when on highway and/or sport settings. Would aks dealer to verify that the suspension alignment is within specs.

 

[AJ1]

My Taycan has been in due to a heater failure and while there they did the usual “health check”. The front tyres are wearing evenly but the rear tyres have both worn disproportionately on the outer edges. Such that they are recommending replacement at just over 7000 miles. To me, it looks like the camber is set incorrectly which has caused the outer edges of the rear tyres to wear. I have asked the question and am awaiting a response. My previous 4S on PS4 tyres didn’t do this.
Taycan Turbo on Pirelli Cinturato P7 tyres.
Image of the report below.
By the way, Porsche Tewkesbury sorted out my heater failure pretty quickly (just over a week) - I left it with them while I was away on holiday.

I have a cross turismo turbo S my rear tyres lasted 7500miles and front are down to 4mm. Porsche recommendation is change at 3mm. Not great for tyres.

 

[W1NGE]

My Taycan has been in due to a heater failure and while there they did the usual “health check”. The front tyres are wearing evenly but the rear tyres have both worn disproportionately on the outer edges. Such that they are recommending replacement at just over 7000 miles. To me, it looks like the camber is set incorrectly which has caused the outer edges of the rear tyres to wear. I have asked the question and am awaiting a response. My previous 4S on PS4 tyres didn’t do this.
Taycan Turbo on Pirelli Cinturato P7 tyres.
Image of the report below.
By the way, Porsche Tewkesbury sorted out my heater failure pretty quickly (just over a week) - I left it with them while I was away on holiday.

Unfortunate but alignment can easily go awry due to pot holes etc

18K miles on Michelin tyres for me but not yet sure how the Pirellis will fair.

 

[Midlifecrisis]

Unfortunate but alignment can easily go awry due to pot holes etc

18K miles on Michelin tyres for me but not yet sure how the Pirellis will fair.

Whilst your statement is obviously correct it does seem suspiciously symmetrical

 

[Tsingtao]

Premature outside tire wear is a function of driving in "stud" mode. Note the serious negative camber (2+ degrees per my tire guy) in the picture above. The Taycan looks badass when fully lowered and it handles even better. The trade-off is that you chew up the outer tread. Best advice is to spend more time in "normal" suspension setting and only drop down to stud mode when necessary.

 

[WasserGKuehlt]

Premature outside tire wear is a function of driving in "stud" mode. Note the serious negative camber (2+ degrees per my tire guy) in the picture above. The Taycan looks badass when fully lowered and it handles even better. The trade-off is that you chew up the outer tread. Best advice is to spend more time in "normal" suspension setting and only drop down to stud mode when necessary.

Outer?
With negative camber, the inner side bears more of the mass, and so wears out faster. Positive camber used to be a thing with simple suspension designs, whereby loading the axle would bring the wheel to neutral or negative camber.

 

[Midlifecrisis]

Fobbed off with this (spelling mistakes are theirs):

"My workshop do not have an exact explaination on the outer wear on your rear tyres. They have said however it isnt anything to be overly concern by, we are talking about 1.6mm diffrence across the whole tyre - the only valid explaination could be due to the fact your Taycan Turbo has dynamic height control, consistently changing the height of the vehicle, subsequently adjusting the camber."

I pointed out that the tyres start with 7mm of tread so the 1.6mm difference is actually 100% difference inner vs outer wear (OSR has used 1.6mm tread on the inner edge and 3.3mm on the outer).

My take on this is that the Pirelli Cinturato tyres that it shipped with do not appear to be fit for purpose on a Taycan Turbo. I will certainly not be replacing them with more Pirellis. I think the Michelin PS4 is a much better tyre.

Do you think there is any mileage in writing to Porsche GB? or am I just wasting my time here? I suspect so.

 

[WasserGKuehlt]

This is really puzzling. I would suspect a toe out of spec for such a pronounced difference. Do you have RAS?

 

[W1NGE]

Fobbed off with this (spelling mistakes are theirs):

"My workshop do not have an exact explaination on the outer wear on your rear tyres. They have said however it isnt anything to be overly concern by, we are talking about 1.6mm diffrence across the whole tyre - the only valid explaination could be due to the fact your Taycan Turbo has dynamic height control, consistently changing the height of the vehicle, subsequently adjusting the camber."

I pointed out that the tyres start with 7mm of tread so the 1.6mm difference is actually 100% difference inner vs outer wear (OSR has used 1.6mm tread on the inner edge and 3.3mm on the outer).

My take on this is that the Pirelli Cinturato tyres that it shipped with do not appear to be fit for purpose on a Taycan Turbo. I will certainly not be replacing them with more Pirellis. I think the Michelin PS4 is a much better tyre.

Do you think there is any mileage in writing to Porsche GB? or am I just wasting my time here? I suspect so.

Most Taycans have air suspension.

Hogwash IMHO.

There is a interesting review of 2nd hand Taycans in one of the UK magazines which calls out uneven / odd tyre wear being a common observation / issue

 

[Silverback]

My car is in to have the heater sorted as well. So received the Health Check; the tyres are down to the cords, on the inside, but still within legal limit across the tyre. This does not seem right to me and did not get a convincing response why. Worst thing is it is dangerous, I check the tyres regularly i.e. running your fingers across the three tread wear indicators, which you can see from the pic are OK (but close to needing a replacement). The tryes have done over 30k so happy with them. Need to push a little harder with the dealer to find a an answer, to ensure that the next set don't go the same way.

 

[Midlifecrisis]

My car is in to have the heater sorted as well. So received the Health Check; the tyres are down to the cords, on the inside, but still within legal limit across the tyre. This does not seem right to me and did not get a convincing response why. Worst thing is it is dangerous, I check the tyres regularly i.e. running your fingers across the three tread wear indicators, which you can see from the pic are OK (but close to needing a replacement). The tryes have done over 30k so happy with them. Need to push a little harder with the dealer to find a an answer, to ensure that the next set don't go the same way.

Good mileage. Which tyres?

 

[Tsingtao]

Outer?
With negative camber, the inner side bears more of the mass, and so wears out faster. Positive camber used to be a thing with simple suspension designs, whereby loading the axle would bring the wheel to neutral or negative camber.

I think you are 100% correct. I just checked my stack of old summer tires and the wear is all on the inside. Sorry for any confusion.

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