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Tyre Wear

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Aceslock
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Joined: 12 Dec 2014
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PostPosted: 10:40 - 14 Jul 2015    Post subject: Tyre Wear Reply with quote
Hi guys, bit of a newbie question........

I was checking my tyres on the weekend and noticed on the rear tyre there seemed to be a lip forming across the back part of the tread? Is this normal wear, or is it something i should be concerned about??

Tyres are Pirelli Diablo's btw

Thanks in advance.... Confused
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Polarbear
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Joined: 24 Feb 2007
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PostPosted: 10:54 - 14 Jul 2015    Post subject: Reply with quote
Pics would help.
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Aceslock
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Joined: 12 Dec 2014
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PostPosted: 11:14 - 14 Jul 2015    Post subject: Reply with quote
Sorry!! Embarassed
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Copycat73
World Chat Champion



Joined: 11 Jan 2013
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PostPosted: 11:28 - 14 Jul 2015    Post subject: Reply with quote
yeah mine does that ..
I don`t stress about it ..
neither should you.. Thumbs Up
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BakesBeans
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Joined: 14 Aug 2012
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PostPosted: 11:58 - 14 Jul 2015    Post subject: Reply with quote
aceslock wrote:
Sorry!! Embarassed


Are those cracks in the rubber?
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Aceslock
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Joined: 12 Dec 2014
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PostPosted: 12:12 - 14 Jul 2015    Post subject: Reply with quote
Quote:
Are those cracks in the rubber?


Where on the edge of the tyre? If so not cracks in the rubber, just excess flashing i think.......
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Aceslock
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Joined: 12 Dec 2014
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PostPosted: 12:15 - 14 Jul 2015    Post subject: Reply with quote
Quote:
yeah mine does that ..
I don`t stress about it ..
neither should you..


Thats ok then........ any idea why it is doing it?
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Minty
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Joined: 23 Dec 2005
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PostPosted: 12:15 - 14 Jul 2015    Post subject: Reply with quote
All I see is a tyre getting very good edge-to-edge action, so a big Thumbs Up from me. Carry on.
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Marlin
Two Stroke Sniffer



Joined: 11 Jun 2012
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PostPosted: 12:49 - 14 Jul 2015    Post subject: Reply with quote
aceslock wrote:
Thats ok then........ any idea why it is doing it?


Not the easiest to follow, but the answer is in the cupping / scalloping section at:
https://www.rattlebars.com/tirewear/index.html#CUPPING

If you think on it further you can tell (by which side of the tread block is worn) whether your wear is from cornering force or acceleration/deceleration force.
If your bike weight, and how hard you accelerate/brake at each lean angle exactly match what the tyre designer expected then the forces on the tyre will be along (rather then across) the big tread blocks (i.e. parallel with the grooves), and this wear at the edges of the blocks will not happen.

Last edited by Marlin on 14:46 - 14 Jul 2015; edited 2 times in total
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Aceslock
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Joined: 12 Dec 2014
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PostPosted: 13:18 - 14 Jul 2015    Post subject: Reply with quote
Cheers Marlin!

This does make some sense, especially the bit explaining the pencil rubber.

I like to ping it as i am coming out of the bends so this is probably the result....... Laughing
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Copycat73
World Chat Champion



Joined: 11 Jan 2013
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PostPosted: 16:34 - 14 Jul 2015    Post subject: Reply with quote
aceslock wrote:
Quote:
yeah mine does that ..
I don`t stress about it ..
neither should you..


Thats ok then........ any idea why it is doing it?

my explanation from gleaned a working knowledge ..
the leading edge deforms under load .. a burr forms of material forced over and out..
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