FAQ: Q2s
- Thread starter BigBird
- Start date
Hi fellas.
I started another thread and it looks like it was moved or deleted. I hope it didn't rub anyone the wrong way. I genuinely want to know if this is caused by something I did or if it's a quality control issue.
Here's a photo of what I noticed when changing the tires.
The cracks are right in the tread grooves. It wasn't just one, it was a few. The tires have not been flipped. I ran the track day pressures at 31 front and 30 rear cold. I'm mid pack Intermediate group.
*disclaimer* This post is not meant to be inflammatory towards Dunlop and it's representatives. I really LOVE the Q2 and the confidence it gives me on the track. I will continue to purchase the Q2 because nothing beats it bang for the buck but I'd like to know more about what I experienced.
I started another thread and it looks like it was moved or deleted. I hope it didn't rub anyone the wrong way. I genuinely want to know if this is caused by something I did or if it's a quality control issue.
Here's a photo of what I noticed when changing the tires.
The cracks are right in the tread grooves. It wasn't just one, it was a few. The tires have not been flipped. I ran the track day pressures at 31 front and 30 rear cold. I'm mid pack Intermediate group.
*disclaimer* This post is not meant to be inflammatory towards Dunlop and it's representatives. I really LOVE the Q2 and the confidence it gives me on the track. I will continue to purchase the Q2 because nothing beats it bang for the buck but I'd like to know more about what I experienced.
Twiztedjester55
New Member
That is what causes the cuts in Fastguys pics, I had the same issue with my 211's and it didn't affect performance at all. The cracks in Turbos pic are totally different almost looks like a dry rot crack in the tread.
AWESOME!!! Thanks for the follow up.
I was worried but now I feel a little better.
Not for nothing, when I was riding the tire over the Summit Pt weekend, I didn't notice anything strange like vibration or chatter coming from the rear. The tire felt great. I was just surprised to see this when I popped the tires off to change them.
DUNLOP-RTS
New Member
32/32 is cold. If you are wanting to use warmers on Q2 you really need to look at stepping up and get race tires.
DUNLOP-RTS
New Member
Yep, its a legit question.
I asked him to send me a PM with the pic and I would have an answer for him. He sent it to me, Thanks. He also then re-posted it.
I am in the process of getting an answer. In the mean time lets use manners and give me an opportunity to get an answer to the question. No need to re post if I don't answer within 1 hour. I have been at NJMP all weekend for the NESBA event there and just returned back to the office.
DUNLOP-RTS
New Member
Sorry BigBird, that is not the same issue. as the quote you noted.
I will have an answer shortly.
DUNLOP-RTS
New Member
What you are seeing is the TREAD SPLICE becoming exposed. This is not the construction of the tire at all. It only the tread rubber that is placed over the carcass when they build the tires. There was an occasional issue with this becoming visible. It was amplified by riders that flipped the tire and ran it in reverse rotation.
The integrity of the carcass is still in place.
If you took a tire groover and added a deep tread cut, that would be the same effect on the tire and its performance.
Its not a safety or performance issue. But it does look like crap, I will give you that.
This issue has been address in the manufacturing process and we have not seen this issue since the 2011 season began.
The reason you do not see this in the UK made tires is because they use a slightly different process in manufacturing (more costly). But the US factory has solved this without costing more (go USA engineers!).
noobinacan
Member
sorry if this is a repeat question
are Q2'a 190/55's same height profile as GPA211 190/55's ?
in terms of height, I think I last heard, Q2's 190/55 won't require any rear height adjustments.
thanks
are Q2'a 190/55's same height profile as GPA211 190/55's ?
in terms of height, I think I last heard, Q2's 190/55 won't require any rear height adjustments.
thanks
DUNLOP-RTS
New Member
D211GPA 190/55x17 is 4 mm diameter bigger than the 190/55 Q2. Which is 2mm in ride height. Nothing to be overly concerned about. Take into consideration your setup is not going to be 100% at this moment anyway.
noobinacan
Member
k thanks for the info.
So in that case should I go for 190/50 vs 190/55 ?
Mikey75702
Member
Does dunlop make a 190/50 anymore? And I am pretty sure they don't in the 211.... So that would mean if you do a /55 211 and a /50 q2 the q2 will be a good bit shorter then the 211
noobinacan
Member
they do make a 190/50 and a 190/55
and the 55 doesn't look like its got a lot of height on it. so, 55 it is.
and the 55 doesn't look like its got a lot of height on it. so, 55 it is.
noobinacan
Member
I wouldn't run those in mid summer on A pace.
but that's just me.
run a race tire in soft compound.
I ran GPA211 soft rear VIR-N and South...and its holding up great. 4 events so far.
still looks like its got two more days in it.