Rotating PS2's?
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Virtually all of the tires made for our cars have a rotation direction designed into the tread pattern. Look at the sidewall and you will likely find a rotation direction arrow. Do not run these tires backwards, especially if you take your car out in the rain since the treads will no longer clear water correctly and your odds of hydroplaning are increased. Our tires are already very wide and more likely to hydroplane, there's no need to help that phenomena more.
As OP originally mentioned, you could attempt to dismount/remount the tires from side-to-side, but again, most of our tires are asymmetrical and moving the outside edge to the inside adversely affects cornering performance, the outer shoulders are designed to be on the outside.
I just wouldn't do this, I don't see any benefit of doing so and see at least two known negatives outside of the old question as to whether the rotation direction of radials should be changed.
As OP originally mentioned, you could attempt to dismount/remount the tires from side-to-side, but again, most of our tires are asymmetrical and moving the outside edge to the inside adversely affects cornering performance, the outer shoulders are designed to be on the outside.
I just wouldn't do this, I don't see any benefit of doing so and see at least two known negatives outside of the old question as to whether the rotation direction of radials should be changed.
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quick dumb question with an easy answer...ive always remounted and used on same side...sooo these tires can rotate either way( by just switching sides) as whats discussed here with no issues?
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Because the tire, depending what side of the car they're on, can rotate either direction. Think about it, you take a tire and wheel off one side of the car and put it on the other (without removing the tire)...the tire still says OUTSIDE on the outside, just like it did on the other side of the car...only now it's rotating the opposite direction it was. I know it's hard to grasp until you go out and see what I'm talking about...it stumped a few of my buddies...the directional thing.
Directional tires have arrows and are only supposed to rotate in that direction (arrows marked on both sides of the tire, either side can be "outside"), so those would have to unmounted and slid/moved directly over to the other side, keeping the same direction of rotation.
Another example is you buy a set of these tires and wheels used already mounted and put them on your car...all the tires say "outside" and can go on either side of the car (you have no idea how the PO had them on his car).
But what the question is: if those tires had been rotating the same direction for say 20,000 miles and you suddenly swap sides, do they retain some kind of "memory" in the material, belts, etc. that would cause the vibration I was experiencing. Seems like I read somewhere this phenomenon can happen. And if you're going to do this sort of thing, do it often.
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No...directional tires have a marking/arrow showing the direction of rotation. Assymetrical tires just have a marking showing "outside".
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I haven't tried directional ones to see if they are really better.
Last edited by cab83_750; Dec 3, 2014 at 11:38 PM.
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my bad
Asymmetrical perhaps.
Because the tire, depending what side of the car they're on, can rotate either direction. Think about it, you take a tire and wheel off one side of the car and put it on the other (without removing the tire)...the tire still says OUTSIDE on the outside, just like it did on the other side of the car...only now it's rotating the opposite direction it was. I know it's hard to grasp until you go out and see what I'm talking about...it stumped a few of my buddies...the directional thing.
Directional tires have arrows and are only supposed to rotate in that direction (arrows marked on both sides of the tire, either side can be "outside"), so those would have to unmounted and slid/moved directly over to the other side, keeping the same direction of rotation.
Another example is you buy a set of these tires and wheels used already mounted and put them on your car...all the tires say "outside" and can go on either side of the car (you have no idea how the PO had them on his car).
But what the question is: if those tires had been rotating the same direction for say 20,000 miles and you suddenly swap sides, do they retain some kind of "memory" in the material, belts, etc. that would cause the vibration I was experiencing. Seems like I read somewhere this phenomenon can happen. And if you're going to do this sort of thing, do it often.
Because the tire, depending what side of the car they're on, can rotate either direction. Think about it, you take a tire and wheel off one side of the car and put it on the other (without removing the tire)...the tire still says OUTSIDE on the outside, just like it did on the other side of the car...only now it's rotating the opposite direction it was. I know it's hard to grasp until you go out and see what I'm talking about...it stumped a few of my buddies...the directional thing.
Directional tires have arrows and are only supposed to rotate in that direction (arrows marked on both sides of the tire, either side can be "outside"), so those would have to unmounted and slid/moved directly over to the other side, keeping the same direction of rotation.
Another example is you buy a set of these tires and wheels used already mounted and put them on your car...all the tires say "outside" and can go on either side of the car (you have no idea how the PO had them on his car).
But what the question is: if those tires had been rotating the same direction for say 20,000 miles and you suddenly swap sides, do they retain some kind of "memory" in the material, belts, etc. that would cause the vibration I was experiencing. Seems like I read somewhere this phenomenon can happen. And if you're going to do this sort of thing, do it often.
i'm old...not an excuse...just sayin'...
and of course, you're right, i am sure i used to know this, just didn't think it through...again
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But what the question is: if those tires had been rotating the same direction for say 20,000 miles and you suddenly swap sides, do they retain some kind of "memory" in the material, belts, etc. that would cause the vibration I was experiencing. Seems like I read somewhere this phenomenon can happen. And if you're going to do this sort of thing, do it often.
And let us not forgot that the suspension (shocks, arms, etc.) in each corner are also different. One side may be worn than the other side; one side might not be as smooth (or might slightly binding) as the other, etc.
It will take a special tool to make a tangible comparison between tires. Our eyes might see the tires as wearing equally but under a microscope, it's the opposite --- thus, the need for Tire Rotation!
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I am sure the tear and wear (memory as you refer to it) in the material do exist. Don't forget that the four corners of the car do NOT apply the same weight. Even the best corner balancer could never adjust the suspension to be all equal.
And let us not forgot that the suspension (shocks, arms, etc.) in each corner are also different. One side may be worn than the other side; one side might not be as smooth (or might slightly binding) as the other, etc.
It will take a special tool to make a tangible comparison between tires. Our eyes might see the tires as wearing equally but under a microscope, it's the opposite --- thus, the need for Tire Rotation!
And let us not forgot that the suspension (shocks, arms, etc.) in each corner are also different. One side may be worn than the other side; one side might not be as smooth (or might slightly binding) as the other, etc.
It will take a special tool to make a tangible comparison between tires. Our eyes might see the tires as wearing equally but under a microscope, it's the opposite --- thus, the need for Tire Rotation!
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Btw, I couldn't remember vibration when I rotated my rear and front tires. However, I definitely remember that my handling on the freeway was not normal (subtle steering correction, not as planted, etc.)
Let's hope that yours is just a coincidental out of balance.
Good luck!
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