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Author Topic: Worn Front Tires inner Side  (Read 1590 times)

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polilara

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Worn Front Tires inner Side
« on: 21 October 2019, 18:12:59 »

So, renewed everything in front last December, made alignment acc. to recommendations, now found this bad situ. Strange, have to recheck soon but difficult to understand what happened?
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Eboy.com

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Re: Worn Front Tires inner Side
« Reply #1 on: 21 October 2019, 18:14:23 »

Camber is incorrect
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Doctor Gollum

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Re: Worn Front Tires inner Side
« Reply #2 on: 21 October 2019, 18:29:28 »

Camber is incorrect
Or the horizontal bolt was tightened in the air ;)
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polilara

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Re: Worn Front Tires inner Side
« Reply #3 on: 21 October 2019, 18:42:37 »

Horizontal bolt was bolted in floor, good guide here, thanks DC. Camber was set to value which is somewhere in my mails here, but certainly wrong now, I try to find it and go to same garage to check. I was standing there last Dec so it was set to what I told.
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Re: Worn Front Tires inner Side
« Reply #4 on: 21 October 2019, 18:44:28 »

 ;) good to rule it out.
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polilara

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Re: Worn Front Tires inner Side
« Reply #5 on: 21 October 2019, 18:58:11 »

Yes!
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polilara

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Re: Worn Front Tires inner Side
« Reply #6 on: 21 October 2019, 19:07:13 »

https://www.omegaowners.com/forum/index.php?topic=144115.msg1887670#msg1887670
we had some discussion here, not sure what is + and what is - ? Could that be the case?
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Re: Worn Front Tires inner Side
« Reply #7 on: 21 October 2019, 19:22:32 »

https://www.omegaowners.com/forum/index.php?topic=144115.msg1887670#msg1887670
we had some discussion here, not sure what is + and what is - ? Could that be the case?
It requires negative camber ;) basically stand facing the wheel and push the top towards the engine.

It is possible that either this was set with the wheels off the ground with no allowance made for the loaded position or that the struts settled before the bolts were tightened fully :-\
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Enceladus

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Re: Worn Front Tires inner Side
« Reply #8 on: 22 October 2019, 03:57:52 »

Ideally the tank is supposed to be full and the front loaded on both sides with 75kg, as well as the wheels being on the ground.
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Re: Worn Front Tires inner Side
« Reply #9 on: 27 October 2019, 11:09:10 »

Camber is incorrect
Or the horizontal bolt was tightened in the air ;)
Either way, the tyre wear is caused by camber.  How the camber is out needs further investigation.
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Re: Worn Front Tires inner Side
« Reply #10 on: 27 October 2019, 11:09:56 »

Ideally the tank is supposed to be full and the front loaded on both sides with 75kg, as well as the wheels being on the ground.
Tank makes little different to front (but does rear), and weights aren't needed when using WIM specs :)
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polilara

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Re: Worn Front Tires inner Side
« Reply #11 on: 28 October 2019, 14:48:01 »

Camber is incorrect
Or the horizontal bolt was tightened in the air ;)
Either way, the tyre wear is caused by camber.  How the camber is out needs further investigation.
I thought that toe out will cause that too, I get it measured it next week Nov. 6 -19 in local GM-dealer, four wheel alignment. Will report then. I was there down today and tried to bend wishbones to see whether those rubber bushes were bad. They were not when bending with tyre lever. I bought a year ago (10 000 km) this https://www.ebay.com/itm/SUSPENSION-CONTROL-ARMS-WISHBONE-KIT-LOWER-FRONT-OPEL-VAUXHALL-OMEGA-B-/381141643466, ATP. Idler have perhaps 10mm play in up down direction, just passed MOT last week so everything should be OK. When I turn left and brake the car turns left, when I turn right and brake car turns right, like those rubbers were soft etc. When I just look the front wheels I can "see" toe out, strange but let's see what the meters show.
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Re: Worn Front Tires inner Side
« Reply #12 on: 28 October 2019, 17:17:13 »

No, toe will not cause shoulder wear. It may introduce accelerated wear across the tyre, but only camber can cause shoulder wear.

The reasons for incorrect camber can be worn/broken suspension/steering, a dramatic change of weight over that axle, or poor setup.
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polilara

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Re: Worn Front Tires inner Side
« Reply #13 on: 28 October 2019, 18:03:55 »

OK, then Camber is not correct anymore (perhaps those four bolts in bottom end of shocks were not tight enough) and that will make track rods "too short" as I think I see the toe out. Let's see next week, drive Astra now...
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Re: Worn Front Tires inner Side
« Reply #14 on: 05 November 2019, 10:38:38 »

You will need to get the 4 wheel alignment done. Your tracking is out.
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