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Groove worn in tires? - 11/3/2012 1:58 AM   
t-max97



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Status: online 		On my rs4 all 4 tires but mostly the back have a groove worn on the inside edge, I thought maybe the body rubbed them some but it overlaps the tires so i dont know what it is, has this happened to anyone else? one of them actually wore thew the tire and they're pretty new.

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RE: Groove worn in tires? - 11/3/2012 2:05 AM   
FahrtAutoRC



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Status: offline 		Do you have a pic of the damage, by chance? I would check first and make sure that there is nothing else rubbing besides just the body. Might even be a case of something not assembled correctly and rubbing only when you trun, so compress the suspension in various way while you inspect it to see if anything hits near the bottom of the stroke. If it is actually a flat spot instead of a groove, then I would say you are running too much camber, but it is hard to tell with no pics. 

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RE: Groove worn in tires? - 11/3/2012 2:24 AM   
t-max97



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Status: online 		Here's a picture. I cant figure it out.....

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RE: Groove worn in tires? - 11/3/2012 2:49 AM   
phmaximus



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Status: offline 		Could that be too much camber, there does not look like much wear in the middle of the tyre.

With out seeing more pics...

It looks like u are running very very excessive camber and have worn out the tyre to the point that it's collapsed onto the sidewall. And is sagging because the rubber is so thin compared to the sidewall.

Also what tyre foam are u running?


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RE: Groove worn in tires? - 11/3/2012 2:53 AM   
t-max97



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quote:

ORIGINAL: phmaximus

Could that be too much camber, there does not look like much wear in the middle of the tyre.

With out seeing more pics...

It looks like u are running very very excessive camber and have worn out the tyre to the point that it's collapsed onto the sidewall. And is sagging because the rubber is so thin compared to the sidewall.

Also what tyre foam are u running?



Its all stock including the camber setting.

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RE: Groove worn in tires? - 11/3/2012 2:58 AM   
phmaximus



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Status: offline 		I've seen this happen before... Not saying u are doing this ok, this is just for other guys to think about

sometimes u can get this from having a high grip racing setup, then bashing it on concrete.

Because the setup has lots of camber to hold traction around fast bends, when it's going straight and the back is down from hard acceleration, if there is wheel spin, it wears out tyres just like in that pic.

I would recomend re checking ur camber and really look at the car during the bends, how much is it leaning over?
And would definatly play around with the top suspension arm mount points. What holes are u running ATM


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RE: Groove worn in tires? - 11/3/2012 2:59 AM   
phmaximus



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quote:

ORIGINAL: t-max97


quote:

ORIGINAL: phmaximus

Could that be too much camber, there does not look like much wear in the middle of the tyre.

With out seeing more pics...

It looks like u are running very very excessive camber and have worn out the tyre to the point that it's collapsed onto the sidewall. And is sagging because the rubber is so thin compared to the sidewall.

Also what tyre foam are u running?



Its all stock including the camber setting.


Hmmm, I don't think they set the camber from factory correctly, but that's ok, u can work from that



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RE: Groove worn in tires? - 11/3/2012 3:06 AM   
t-max97



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Status: online 		As soon as I fix my clutch i will, There are two holes to use and its on the top one on the front and rear towards the chassis. and the bottom one on the right at the tires in the rear and and the ones closest to the tires in the front. If you understood that haha. I was doing alot of high speed turns and sliding around lol.

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RE: Groove worn in tires? - 11/3/2012 10:17 AM   
Anthoop



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quote:

ORIGINAL: phmaximus
It looks like u are running very very excessive camber and have worn out the tyre to the point that it's collapsed onto the sidewall. And is sagging because the rubber is so thin compared to the sidewall.

I had a tyre wear like that also. Negative camber was not excessive.
I think the tyre wears so thin that when driving it balloons even more in the thin area than the rest of the tread ....causing even more wear...in the end my tyre ripped leaving 2 seperate parts.
I guess the rubber is thicker in the middle than it is at the sidewall junction.


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RE: Groove worn in tires? - 11/3/2012 11:24 AM   
phmaximus



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Status: offline 		One would think if it was due to tyre ballooning wouldent the wear mark be more towards the centre near where the tyre would ballon the most?

Yes I agree that it's going to lead to sepperation of the tyre, but I don't agree that it's from the tyre ballooning

IMO looks like there is to much camber for his driving style

If the driver was easy on the corners but was getting wheel spin out f he corners and down the straights he might be better running about. 0.5deg camber on the rear, but by the looks of hat pic thats has go to be near 3 deg?


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RE: Groove worn in tires? - 11/3/2012 2:42 PM   
t-max97



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quote:

ORIGINAL: phmaximus

One would think if it was due to tyre ballooning wouldent the wear mark be more towards the centre near where the tyre would ballon the most?

Yes I agree that it's going to lead to sepperation of the tyre, but I don't agree that it's from the tyre ballooning

IMO looks like there is to much camber for his driving style

If the driver was easy on the corners but was getting wheel spin out f he corners and down the straights he might be better running about. 0.5deg camber on the rear, but by the looks of hat pic thats has go to be near 3 deg?



How do you tell how degrees its at?

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RE: Groove worn in tires? - 11/3/2012 4:22 PM   
Anthoop



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quote:

ORIGINAL: phmaximus

One would think if it was due to tyre ballooning wouldent the wear mark be more towards the centre near where the tyre would ballon the most?
Yes I agree that it's going to lead to sepperation of the tyre, but I don't agree that it's from the tyre ballooning

I am only guessing at what happened with my tyre, I had around -1 deg of camber. I still have the tyre from the other side that has worn in a similar fashion and I can feel the rubber is thinner at the edge than in the middle (picture below)

quote:

ORIGINAL: t-max97
How do you tell how degrees its at?

There are many different tools to measure camber, you could get a rough idea with just a protractor, I have one of the set up stations (picture below).

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RE: Groove worn in tires? - 11/3/2012 9:41 PM   
9five9



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Status: offline 		I've had one vehicle come from the factory with the nastiest camber - to the point where I thought it was broken. You can't always trust factory settings.

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RE: Groove worn in tires? - 11/4/2012 1:12 AM   
t-max97



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Status: online 		I adjusted the camber so theres not as much now, I need one of those set-up stations lol. Ive only ever had off-road trucks and stuff like this wasnt as critical so i didnt know where to set it.

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RE: Groove worn in tires? - 11/4/2012 1:14 AM   
phmaximus



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Status: offline 		dont worry about a setup station they are sooo expensive... get one of these
RPM camber gauge, they do a tow gauge to... oh they are about $9-




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RE: Groove worn in tires? - 11/4/2012 1:16 AM   
t-max97



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quote:

ORIGINAL: phmaximus

dont worry about a setup station they are sooo expensive... get one of these
RPM camber gauge, they do a tow gauge to... oh they are about $9-





Awesome ill get one sometime.


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RE: Groove worn in tires? - 11/4/2012 1:19 AM   
phmaximus



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Status: offline 		Before I had one I use to use my drivers licence and mesure the top gap, that way i could get both sides the same.
what I did was watched the car for how much it leaned over on the track, then i would simulate that on a bench by hand & set the camber so the wheel was upright and level, and doubble check it by checking the tyre ware


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RE: Groove worn in tires? - 11/6/2012 1:09 PM   
Gilchrist111


 

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Status: offline 		Large steel checkpoint and the rubberized rim is not only dressed in out very quick on the tangible but it is dressed in a pattern in the concrete..i think its Tyre lineament problem in the Tyre...whats your opinion?




< Message edited by i8tweety -- 1/14/2013 4:26 PM >

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RE: Groove worn in tires? - 11/6/2012 8:17 PM   
FahrtAutoRC



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Status: offline 		English would make this easier to understand, in my opinion.

quote:

ORIGINAL: Gilchrist111

Large steel checkpoint and the rubberized rim is not only dressed in out very quick on the tangible but it is dressed in a pattern in the concrete..i think its Tyre lineament problem in the Tyre...whats your opinion?



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