Flipping Pirelli slicks

ppawlows

Active member
I apologize if this has been covered before, but search function did not show much on the topic. So, has anyone had issues after flipping Pirelli slicks? Thanks.
 
Pirelli's official answer is no but riders do it all the time.

Edit: we are of course ONLY discussing the rear
 
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Ha ha ha ha!

It means turning the tire around on the rim so the left side is right and the right is left. Useful if you run in one direction on the track and so wear out one side of the tire more quickly than the other. Officially tires are marked as per direction of rotation so you are not supposed to do this.

In SOAR sometimes Ken flips the track for us so we don't have to flip tires. :)
 
Ha ha ha ha!

It means turning the tire around on the rim so the left side is right and the right is left. Useful if you run in one direction on the track and so wear out one side of the tire more quickly than the other. Officially tires are marked as per direction of rotation so you are not supposed to do this.

In SOAR sometimes Ken flips the track for us so we don't have to flip tires. :)
that makes so much more sense... thank god its doesn't mean what i was thinking it meant.
 
I apologize if this has been covered before, but search function did not show much on the topic. So, has anyone had issues after flipping Pirelli slicks? Thanks.

Every tire has a butt splice, where the inside of the carcass overlaps during construction.
By turning it around, you create a situation where that splice could lift, split under acceleration and delaminate.
The manufacturer has a product liability, hence why they don't want you to do it.
 
Or that they would much rather sell you a brand new one. :cool:

If the tire came apart at speed and you fell off and got hurt (or worse), you might have a different opinion.
Why don't they run superbikes in the Daytona 200 anymore ?
Because nobody can figure out how to build a tire that will live.
 
that makes so much more sense... thank god its doesn't mean what i was thinking it meant.

Out of curiosity, what DID you think it meant?

I don't think there's a tire from any of the manufacturers that guys don't flip.
 
I thought it meant flipping the inner side of the tire.. you knowthe side facing the rim instead of the road.
 
Out of curiosity, what DID you think it meant?
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If the tire came apart at speed and you fell off and got hurt (or worse), you might have a different opinion.
Why don't they run superbikes in the Daytona 200 anymore ?
Because nobody can figure out how to build a tire that will live.

Superbike tire longevity is in no way germane to this discussion.


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I thought it meant flipping the inner side of the tire.. you knowthe side facing the rim instead of the road.

Well good thing you didn't try that lol. It would have been cool to see you do this through the pit though provided you look like her.



If the tire came apart at speed and you fell off and got hurt (or worse), you might have a different opinion.
Why don't they run superbikes in the Daytona 200 anymore ?
Because nobody can figure out how to build a tire that will live.

If I can take my tire to the vendor and ask them to flip it (for their posted price of flipping a tire) than why shouldn't I?
 
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Superbike tire longevity is in no way germane to this discussion.

Its germane only in that it is an example of what can happen if you try to extend the service life of a tire past its design limits.
Flipping them around, and/or running them through too may heat cycles can increase the risk of failure and subsequent 'personal' issues.
I doubt sincerely the tire manufacturers do it just to sell you more stuff.
Disclaimer: I am in no way associated with anyone involved in the motorcycle race tire business...
 
that makes so much more sense... thank god its doesn't mean what i was thinking it meant.

One of the rules around here is that if you ask an honest question you will eventually get a reasonable answer....but people get to f*** with you first.
 
Its germane only in that it is an example of what can happen if you try to extend the service life of a tire past its design limits.
Flipping them around, and/or running them through too may heat cycles can increase the risk of failure and subsequent 'personal' issues.
I doubt sincerely the tire manufacturers do it just to sell you more stuff.
Disclaimer: I am in no way associated with anyone involved in the motorcycle race tire business...

Tires fail at Daytona for the same reason they do at Phillip Island. Extreme loading that the tire can't tolerate.

Who decides what the design limit of a tire is? There is no specification that X tire will last XX laps. They work until they are no longer able to provide the grip you require.

Can you provide any references to on-track tire delamination? Excluding Daytona and PI of course....


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