Rotated my tires corner-to-corner and got loose af

MFE

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I've been running all clockwise tracks with hard right turns, so the outer edge of the left side tires was taking a beating. I also wanted to rotate them front to back to even out some wear. So I swapped them corner to corner and it was like driving a lunch tray on snow.
 

MFE

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I wish I knew. I adjusted the tire pressures, and the tread direction shouldn't matter on dry pavement, so I'm at a loss.
 

Serpent

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I wish I knew. I adjusted the tire pressures, and the tread direction shouldn't matter on dry pavement, so I'm at a loss.
[What are the dates on the tires? I had pzero grips that I thought were really just shitty after 1 track day, had about 75% tread left too. ended just being an old tire too, 2013 tires that i finally replaced on my viper.
 

MFE

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I'm too lazy to check the date codes but this is their 7th event since I installed them in May. The car didn't do me like this until I rotated them after that day's first session or two.
 

blue 07

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Maybe you should take up drifting, yikes. Nice driving with those tires like that !!
 

AustinSN

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Was it colder than normal?
With him being in a t shirt it doesn't seem like temps would be an issue. Especially after a lap or two.

Are you typically hard on the front tires? I'm wondering if you heat cycled them pretty bad up front and when you swapped to the rears it changed everything.
 

MFE

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It was low 80's so it wasn't cold. I wondered about the heat-cycling but those tires have been rotated back to front at least twice, but always stayed on the same side of the car with the correct directional orientation. This time I put RF on LR and LF on RR and all hell broke loose LOL
 

1wild-horse

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Swapping side to side changes the direction of travel. Not sure why it would have anything to do with bite. Kinda weird.
 

blk02edge

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With him being in a t shirt it doesn't seem like temps would be an issue. Especially after a lap or two.

Are you typically hard on the front tires? I'm wondering if you heat cycled them pretty bad up front and when you swapped to the rears it changed everything.
Yea I just figure if he went from 120 to 80 or so thats a big difference that would throw off hot pressure mixed with being out of heat cycles and the rotation was just coincidence. Ive never had a rotation throw me off like that.

What tire OP?
 

prs97

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Swapping side to side changes the direction of travel. Not sure why it would have anything to do with bite. Kinda weird.

Total ignorance on my part so I'm curious. Is the tread pattern design to work well in one particular direction? If the way the tires were rotated put the tire tread out of it's designed path, could that explain the traction loss?
 

earico

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This is just a guess but I'm thinking it's just basic geometry. The following sketch is done with the wheels at the straight up 12 o'clock position. No camber.

You said the outside of the tire is more worn. I'm showing that in the before sketch but it's exaggerated for demonstration.

Now look at the after. You are naturally riding on the meatier point of the tire. Now rotate it in the direction of the arrow for your negative camber. The issue is even worse.
Screenshot_20191107-120455~2.png
 
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AustinSN

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Total ignorance on my part so I'm curious. Is the tread pattern design to work well in one particular direction? If the way the tires were rotated put the tire tread out of it's designed path, could that explain the traction loss?
EDIT


Misread what you asked.
 
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1wild-horse

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Total ignorance on my part so I'm curious. Is the tread pattern design to work well in one particular direction? If the way the tires were rotated put the tire tread out of it's designed path, could that explain the traction loss?
There are directional tread tires, I assumed in this case they are not.
I would buy into stagger, but not sure how it plays into road coursing a car. Dirt tracking or ovals always stagger tire size because they always turn left.
 

AustinSN

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Total ignorance on my part so I'm curious. Is the tread pattern design to work well in one particular direction? If the way the tires were rotated put the tire tread out of it's designed path, could that explain the traction loss?
Also, I completely misread what you said.

Yes there are directional tires, and he is most likely running a directional tire.

I had it in my mind you were thinking about a tire that's designed to go left rather than right, for whatever reason.
 

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