Q2 users

backinthesaddleagain · September 30th, 2013, 01:29 PM

Anyone get these type of tears on your dunlops? Seem to be common and Dunlop race support phone rep told me it is nothing to worry about. Still it doesn't make me too confident. Sorry for poor quality pics, took them late last night.

KawiKid860 · October 1st, 2013, 06:30 PM

Haven't seen them in either my Q2 or Q3. Q2 rear, 5000 miles and one track day, Q3 front ~500 miles and one track day.

sharky nrk · October 2nd, 2013, 07:06 AM

Not a Dunlop user but I have seen similar little tears on some Michelins - again was told nothing to really worry about.

csmith12 · October 2nd, 2013, 07:20 AM

I have had a bit of cupping with mine but never had a set of Q2's do that to me. What kind of riding have you been doing lately?

rc racer · October 2nd, 2013, 07:21 AM

Had similar tears forming on my Bridgestone BT003 too. Showed it to the bridgestone race support guy at the track and he also said its fairly common, nothing to worry about and will go away as the tire wears. He informed me its just a small void in the rubber that forms in the mold during production. I have since done a couple races and a couple track days and he was right. These voids are going away since they where close to the surface and I have worn through them.

backinthesaddleagain · October 2nd, 2013, 01:53 PM

Quote:

Originally Posted by rc racer

Had similar tears forming on my Bridgestone BT003 too. Showed it to the bridgestone race support guy at the track and he also said its fairly common, nothing to worry about and will go away as the tire wears. He informed me its just a small void in the rubber that forms in the mold during production. I have since done a couple races and a couple track days and he was right. These voids are going away since they where close to the surface and I have worn through them.

That's what Dunlop race support told me over the phone. Dunlop customer service said have dealer send tire back for warranty evaluation.

backinthesaddleagain · October 2nd, 2013, 01:55 PM

Quote:

Originally Posted by csmith12

I have had a bit of cupping with mine but never had a set of Q2's do that to me. What kind of riding have you been doing lately?

Just street riding. If it wasn't the same type of cut on both sides of the tire, with not such cut in the middle where you usually wear the tire, i'd figure I ran something over. Track day on Monday. Might buy new tire and send this one back to see what the answer is and if I get a credit, or they return it and say run it.

Foxrider64 · October 3rd, 2013, 07:41 AM

I cheaped out a couple of years ago and ran a trackday at Daytona with Q2's Halfway through the day I started to get tears like that- except mine went the width of the tire.

I didn't run all the sessions because I was worried the tire would separate entirely.

I have since put that same tire on my street bike and put over 5000 miles on it with no issues. It's time for a new one now though.

The Dunlop crew at the track said it was normal after excessive heat of running a DOT tire to the extremes I was- I'm shocked to see it happened to you with only running it on the street.

backinthesaddleagain · October 3rd, 2013, 09:07 AM

they had 2 track days on them. replacing there rear Friday and doing 2 track days next week. see how the new Q3 does.

csmith12 · October 3rd, 2013, 09:38 AM

Lemme know how the Q3's do, here was my set of Q2's a year ago after 3 track days with suspension dialed in just about right. Light cupping (air pressure slightly off) and no tears.

backinthesaddleagain · October 3rd, 2013, 10:47 AM

will do

Boosted139 · October 3rd, 2013, 11:04 AM

Dave Moss posted a similar picture of a Q3 flipped and was concerned about delamination, but Dunlop apparently reached out and said it's not that, don't worry about it.

tooblekain · October 3rd, 2013, 11:06 AM

Prior to the NInja 250 I had, I was using the Q2s a lot on my D675 track bike.

It's common to see that happen...nothing to worry about. It will not affect handling or grip.

I would only worry if the crack festers itself to something worst like if it actually will delaminate from the carcass itself and you have a huge chunk of tire compound hanging off exposing some of the carcass.

October 2nd, 2013, 07:20 AM	#4
csmith12 The Corner Whisperer Name: Chris (aka Reactor) Location: Northern KY Join Date: May 2011 Motorcycle(s): 2010 250 (track), 1992 250, 2006 R6 (street/track), 2008 R6 (track) Posts: Too much. MOTY 2015, MOTM - Nov '12, Nov '13	I have had a bit of cupping with mine but never had a set of Q2's do that to me. What kind of riding have you been doing lately? __________________________________________________ Goal: Shake A Million Hands \| Look through the corners \| Track Day Prep \| Closest track? \| The Mid-Ohio School

October 3rd, 2013, 11:06 AM	#13
tooblekain ninjette.org sage Name: Matt Location: San Diego, CA Join Date: May 2012 Motorcycle(s): 2007 Triumph Bonneville; 2008 Ninja 250r (trackbike) Posts: 748	Prior to the NInja 250 I had, I was using the Q2s a lot on my D675 track bike. It's common to see that happen...nothing to worry about. It will not affect handling or grip. I would only worry if the crack festers itself to something worst like if it actually will delaminate from the carcass itself and you have a huge chunk of tire compound hanging off exposing some of the carcass. __________________________________________________ CVMA #312SoCal TrackdaysBigHeadz RacingMotion ProFactory EffexLeatt Brace* Racetech Bell Woodcraft CFMVortexHotbodiesSurface Sun SystemsBrakingLiveWire EnergyFreegun Underwear

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October 1st, 2013, 06:30 PM	#2
KawiKid860 ninjette.org certified postwhore Name: Murphey Location: Eastern Washington Join Date: Apr 2011 Motorcycle(s): 2002 Honda 919, 2004 Ninja 500R NAKED Posts: A lot.	Haven't seen them in either my Q2 or Q3. Q2 rear, 5000 miles and one track day, Q3 front ~500 miles and one track day.

October 2nd, 2013, 07:06 AM	#3
sharky nrk Fighting Texas Aggie '05 Name: Neil Location: Hutto, TX Join Date: Feb 2009 Motorcycle(s): '07 ZX6R, '08 Versys, '09 250R Track, '93 F2/F3 Track Posts: A lot.	Not a Dunlop user but I have seen similar little tears on some Michelins - again was told nothing to really worry about.

October 2nd, 2013, 07:21 AM	#5
rc racer ninjette.org member Name: robert Location: Dallas Join Date: Oct 2012 Motorcycle(s): 2015 R3, 1969 CB160, 2002 TTR125, 2007 KX250F Posts: 96	Had similar tears forming on my Bridgestone BT003 too. Showed it to the bridgestone race support guy at the track and he also said its fairly common, nothing to worry about and will go away as the tire wears. He informed me its just a small void in the rubber that forms in the mold during production. I have since done a couple races and a couple track days and he was right. These voids are going away since they where close to the surface and I have worn through them.

October 3rd, 2013, 07:41 AM	#8
Foxrider64 Hello Moto Name: Alex Location: Ft. Myers Join Date: Mar 2013 Motorcycle(s): 1975 RD350; 2001 KX125; 2003 Z1000; 2003 KDX50; 2009 ZX6R; 2011 Ninja 250R; 2014 KX250F Posts: 352	I cheaped out a couple of years ago and ran a trackday at Daytona with Q2's Halfway through the day I started to get tears like that- except mine went the width of the tire. I didn't run all the sessions because I was worried the tire would separate entirely. I have since put that same tire on my street bike and put over 5000 miles on it with no issues. It's time for a new one now though. The Dunlop crew at the track said it was normal after excessive heat of running a DOT tire to the extremes I was- I'm shocked to see it happened to you with only running it on the street.

October 3rd, 2013, 09:07 AM	#9
backinthesaddleagain ninjette.org certified postwhore Name: Greg Location: Rhode Island Join Date: Apr 2009 Motorcycle(s): 2013 ZX6R 636 Posts: A lot.	they had 2 track days on them. replacing there rear Friday and doing 2 track days next week. see how the new Q3 does.

October 3rd, 2013, 10:47 AM	#11
backinthesaddleagain ninjette.org certified postwhore Name: Greg Location: Rhode Island Join Date: Apr 2009 Motorcycle(s): 2013 ZX6R 636 Posts: A lot.	will do

October 3rd, 2013, 11:04 AM	#12
Boosted139 ninjette.org guru Name: Justin Location: Central NJ Join Date: Sep 2010 Motorcycle(s): 2009 Ninja 250R SE, 2009 Triumph Daytona 675 Posts: 334	Dave Moss posted a similar picture of a Q3 flipped and was concerned about delamination, but Dunlop apparently reached out and said it's not that, don't worry about it.