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RS: Rubbing front and rear

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Old 05-09-2016, 10:06 AM
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Kobalt
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Default RS: Rubbing front and rear

Done a couple of laps now at Nürburgring and has experienced the infamous rubbing in the front. Se picture.

But there also seems to be issues in the rear right. A friend of my have the same issue with his RS and draw attention to it.
it is the rear fenders inside that touches the tire, leaving a mark on the tire and the fender is black of rubber.

I believe that the problems occurs in the the fast downhill right handers "Before Schwedenkreutz" and Fuchsröhre.


Looks like the front tire is slowly digesting the indicator.

FYI: The car is completely original except for the 4 dl oil I have put in it.


UPDATE
There is a Service action: 28-16 (Workshop manual/4X00)

As I understand it they check the wheel alignment so it is original.
In the front they replace the liners with new liners that are modified with heat by the Porsche Workshop.
The plastic mesh in the fenders are removed.

In the rear the fenders are rolled to give more clearance. (FWIW: My dealer did not have the tools for that.)





This is where the tire seems to touch the inside of the rear fender:


Marks on the tire:


Since I also use my RS in rain this is not going to be so good...

Last edited by Kobalt; 05-10-2016 at 08:39 AM. Reason: Updated with Service Action info
Old 05-09-2016, 10:11 AM
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orthojoe
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Stock alignment / camber / caster?
Old 05-09-2016, 10:52 AM
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Nizer
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There's a bulletin floating around on the rubbing issue. Have your alignment and ride height verified by a competent shop - no guarantee car left factory with proper specs.
Old 05-09-2016, 10:58 AM
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orthojoe
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That rubbing is from excess caster likely from aggressive camber settings on stock thrust arm bushings
Old 05-09-2016, 11:08 AM
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Kobalt
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Just to be clear: The setup is not verified, it is just as it came from factory. I'm going to check with my dealer if they have any information about this.
Old 05-09-2016, 11:24 AM
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Kobalt
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Just off the phone with my dealer:

They've got some sort of notice regarding both problems.
He will return to me with more info tomorrow (it was new for them too).
Old 05-09-2016, 11:57 AM
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CRex
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Stock my front rubbed at about 75% to full lock either side. Think PAG really tried hard to give this car the biggest baddest tire around.
Old 05-09-2016, 12:11 PM
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meaker
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Originally Posted by CRex
Stock my front rubbed at about 75% to full lock either side. Think PAG really tried hard to give this car the biggest baddest tire around.
I'm surprised that Porsche didn't see this during testing. Seem like a modified front fender well can fix the front. Rear would be a bit harder other then checking alignment for being off.
Old 05-09-2016, 01:31 PM
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Kobalt
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Originally Posted by meaker
I'm surprised that Porsche didn't see this during testing. Seem like a modified front fender well can fix the front. Rear would be a bit harder other then checking alignment for being off.
I believe that they will roll the rear fenders to give room.

In the front it will not help with new liners since even the indicator behind the liner get rubbed (I think).
Old 05-09-2016, 04:21 PM
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jo_ker
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in pff.de there is a discussion about it on 30pages. no result. but it seems that 2016 deliveries do not have it that much. are higher. have different alignments.

They really gone on/over the edge with tire/rideheight/alignments. and this is stock and has German Tüv.

better to have it like this instead a 10cm gap between tire and fenders (as on the 458 in stock for example).
Old 05-09-2016, 05:20 PM
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The New 911
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[QUOTE=jo_ker;13272334
better to have it like this instead a 10cm gap between tire and fenders (as on the 458 in stock for example). [/QUOTE]
10CM? Woulen't that severally limit track and road setups unless they ligt the car maybe another 5CM? Addendum - getting my metric and imperial fouled up. I was think how tough it would be for 10MM which is quite smaller than 10

But then I'm not totally into the ins and outs of Ttack setup. I feel Ferrari filled out the wheel wells, as in Porsche, with take wheels and small series tires.

Last edited by The New 911; 05-09-2016 at 05:39 PM.
Old 05-09-2016, 06:10 PM
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I was wondering why the RS I saw yesterday look like it had a lift kit.
Old 05-09-2016, 06:52 PM
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This is why many of us are asking for "Cup" edition. It doesn't do much good to have an adjustable suspension that you can't adjust or center-lock wheels that take two people and 45mins to mount and dismount or brake calipers that need to be dissembled to change pads.....
Old 05-09-2016, 07:04 PM
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Exactly what mine did.

Porsche gave me new revised front fender liners and a secret setup.
Now it's fine. Even at Sebring.

Whatever the gave me I taped the liners and went down on turn per session.
I was only able to go 2 turns front and one turn rear.

After that zero toe front and 1mm in rear per side
Camber -3 F -2.7R if I read the sheet right.

I should drop off the car again to get a good read but I'm on Dunlops now and I rather continue testing on the MPSC2..

The right
Old 05-10-2016, 06:58 AM
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Talked to my dealer now:

There is a Service action: 28-16 (Workshop manual/4X00)

As I understand it they check the wheel alignment so it is original.
In the front they replace the liners with new liners that are modified with heat by the Porsche Workshop.
The plastic mesh in the fenders are removed.

In the rear the fenders are rolled to give more clearance. (FWIW: My dealer did not have the tools for that.)

Last edited by Kobalt; 05-10-2016 at 08:40 AM.


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