pilot road 2ct ? - Wrist Twisters
 
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post #1 of 8 Old 11-05-2010, 03:40 PM Thread Starter
Tirone
 
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pilot road 2ct ?

a few months ago i put on a pilot road 2ct on the front of the 919 and today i noticed a razor thin split allmost like a cut that goes all around the tire.its not really straight and seems to have a weavy pattern to it.it is just left of center when standing in front of the bike.i can drag my thumb nail across it and feel it also.anyone here seen this before.it only has five or six hundred miles on it.

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post #2 of 8 Old 11-05-2010, 04:43 PM
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Sounds like the moulding mark that is visible on them and it totally normal. HOWEVER it should not be a physical 'split' just a visible line of difference. If there is indeed any separation in the rubber on this line then take it back for a replacement.
Some of the very first 2C PR2's had separation issues when released but that was years back.

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post #3 of 8 Old 11-05-2010, 04:58 PM
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When I started running Michelin radials in 1988 I noticed what you describe within a couple hundred miles, and yes it made me a bit nervous at first. An average of 10,000 to 15,000 miles later the line had not changed much as I was replacing them. 22 years and 400,000 miles later, all on Michelins, that line is usually still there ... and I don't notice it any more. In fact I had to go to the garage and check my current set -- the front has it, but the rear doesn't.

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post #4 of 8 Old 11-05-2010, 11:05 PM
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That is an anti-static strip and it's normal on the Michelin Silica tires.

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post #5 of 8 Old 11-06-2010, 06:09 AM
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Funny, I always wondered what those damn lines were on mine!


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post #6 of 8 Old 11-06-2010, 03:58 PM Thread Starter
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thanks guys ill keep an eye on it, ive been riding for over 40 yrs and never seen anything like it before.looks like someone ran a razor blade all the way around the tire and made a real shallow cut ?

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post #7 of 8 Old 11-06-2010, 10:04 PM
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Carbon compound tires don't have the strip since they discharge any built up charge naturally. The Silica type tires are a new (under 10 years) and need the strip. The silica is what gives those tires their massive grip.

I had Michelin silica road bike tires in 98 and they stuck like glue, even on things like metal bridge gratings in the rain. I can recall wishing they'd transfer the compound up to motorcycle tires, then a few years later they did!

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post #8 of 8 Old 11-10-2010, 11:30 AM Thread Starter
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you guys are 100# right,this is what michelin says.[The Michelin Pilot Road 2 has a carbon black ribbon around the circumference of the tread to reduce static electricity build up. This is especially important when stopping for gasoline or toll booths, etc.]

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