Check Your Tires!

[BjörnfromHamburg]

Changed my wheels to winter set-up a few days ago.
It was an "early round" and I'm very happy I did it.
n both front tires the carcas shows on the inside.
No way visible, when tires are on the car.
BTW: good time, to buy a new summer-set:
Got a set new Goodyears 21" Assymetric 5 NF1 for € 1100,- , including 24 months tire insurance.

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[Murph7355]

Changed my wheels to winter set-up a few days ago.
It was an "early round" and I'm very happy I did it.
n both front tires the carcas shows on the inside.
No way visible, when tires are on the car.
BTW: good time, to buy a new summer-set:
Got a set new Goodyears 21" Assymetric 5 NF1 for € 1100,- , including 24 months tire insurance.

And this is a classic example of why Porsche needs to look at the setup of the car.

Yours, same as mine, look to have plenty of tread left over the actual tread width, but the corner edge of the tyre is worn so badly it's through to the cords.

That's not right.

Am going to see how my latest set wear and then have a more earnest chat with Porsche on this.

To the poster above that notes about handling, how much better might the car be if it were using the whole tread width properly! Although every time I look at cases like this one, it looks like it is....it's just that corner is getting worn excessively.

 

[darrenfx]

Taycans have very aggressive negative camber, and positive caster of which camber can go out of spec as explained in:



You can reduce camber, toe and still stay in spec, and reduce the wear significantly

Before (left) and after (right)

 

[rim23]

Wait, wasn’t it sport plus setting on the suspension that was causing these kind of suspension settings resulting in extra usage of the inner side of a tire?

 

[Durham]

When I get my alignment checked, that was what I was going to do - get the camber set at the lower height.

I'm also sure there's a faint "whirring" when in the lower modes, that I'm wondering if it might be the merest bit of contact with the tyres.

I’m having the same problem with the inner edges of the front Michelin tyres on my CT 4S at 13k miles. Found this out only as a result of my dealer (Bristol Porsche) having the car in for 12v battery discharge issues. The car had to be taken there on a low loader but that’s another story. It is almost impossible to see this wear on the Inner edges unless the car is in the air.
i would be really interested to know if your alignment changes fixed, or even helped, the problem. Also do you have any independent alignment recommendations - you mention a video which I have been unable to find. I’m based in SE Somerset so not too far from the coast.
Thanks

 

[Murph7355]

I haven't had mine changed yet. Wanted to see what happens if I simply don't manually use Sport or Sport+. (Though of course the "issue" there is that the car automatically lowers).

The dealer suggested running higher pressures too - to the upper side of the door jamb figures - which I've been doing.

The video is here :

It's a company called Carbonwurks in Poole.

The problem for mere owners testing this is that it's expensive both in parts (tyres are over £1k per set) and time to the point it's very difficult to do meaningfully at all. I cannot believe that in the millions of test miles they must have run, Porsche did not experience this at all. And I imagine lots of owners get individually fobbed off with it being a tyre pressure issue or similar.

 

[Durham]

As if by magic the CarbonWurks video popped up when I made that post - so I now know where and who CarbonWurks are. Has anybody here used them annd are they recommended?

 

[Durham]

I haven't had mine changed yet. Wanted to see what happens if I simply don't manually use Sport or Sport+. (Though of course the "issue" there is that the car automatically lowers).

The dealer suggested running higher pressures too - to the upper side of the door jamb figures - which I've been doing.

The video is here :

It's a company called Carbonwurks in Poole.

The problem for mere owners testing this is that it's expensive both in parts (tyres are over £1k per set) and time to the point it's very difficult to do meaningfully at all. I cannot believe that in the millions of test miles they must have run, Porsche did not experience this at all. And I imagine lots of owners get individually fobbed off with it being a tyre pressure issue or similar.

Thanks Murph - this crossed with mine. I think I’m going to see if my local independent is up to doing these changes within manufacturer spec. If not I may give CarbonWurks a call. My tyres are not at the replacement wear level yet. It would be interesting to see if they can be flipped side to side too.

 

[Murph7355]

You can't just check the wear markers. You need to get under the car and look on the sidewall/tread corner on the inside.

My wear markers were all fine when my rears deflated!

 

[chun]

I haven't had mine changed yet. Wanted to see what happens if I simply don't manually use Sport or Sport+. (Though of course the "issue" there is that the car automatically lowers).

The dealer suggested running higher pressures too - to the upper side of the door jamb figures - which I've been doing.

The video is here :

It's a company called Carbonwurks in Poole.

The problem for mere owners testing this is that it's expensive both in parts (tyres are over £1k per set) and time to the point it's very difficult to do meaningfully at all. I cannot believe that in the millions of test miles they must have run, Porsche did not experience this at all. And I imagine lots of owners get individually fobbed off with it being a tyre pressure issue or similar.

Not all cars have this issue. Mine in 4+ years didn’t have this.

I have to assume alignment issues with some, or simply the alignment spec from porsche has a too wide bracket of values, and some cause issues.

Could also be caused by differences in car spec, all those torque vectoring and pdcc and whatever. Who knows.

 

[Murph7355]

Not all cars have this issue. Mine in 4+ years didn’t have this.

I have to assume alignment issues with some, or simply the alignment spec from porsche has a too wide bracket of values, and some cause issues.

Could also be caused by differences in car spec, all those torque vectoring and pdcc and whatever. Who knows.

Porsche should. They're an engineering company allegedly ?

What size wheels do you have? And do you have PTV, RAS and/or PDCC?

 

[chun]

Porsche should. They're an engineering company allegedly ?

What size wheels do you have? And do you have PTV, RAS and/or PDCC?

It never happened on either winter 20 or summer 21

I do have all options on mine

I drive only sport and sport+ outside cities, and normal in cities

 

[Murph7355]

It never happened on either winter 20 or summer 21

I do have all options on mine

I drive only sport and sport+ outside cities, and normal in cities

Really interesting.

What tyres and pressures do you run?

 

[Durham]

You can't just check the wear markers. You need to get under the car and look on the sidewall/tread corner on the inside.

My wear markers were all fine when my rears deflated!

Good point. However, the vehicle video report from the dealer says worn shoulders and only that I should think of changing tyres. So hopefully good for a few miles yet - especially if they can be flipped side to side.

 

[chun]

Really interesting.

What tyres and pressures do you run?

2.8 all 4 on the 21 summer

2.6 front 2.7 back on 20 winter

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