Maladin's tire

[tzracer]

Nonetheless, you would race with a tire that has a gash in it, then its your decision. Just because the synptom is common doesn't necessarily mean the cause is the same. If we are all to presume all is ok, I wouldn't safety wire my bike because the nut should be able to stay on the bike... being cautious saves lives, and if one brand of tire tend to causes more concern, I probably not going to use it.

It depends what the tire looks like, is it a gash or the end of the wrap? Is cord showing? As long as it is just the wrap line, I have used them. Sometimes it gets worse, sometimes it does not. If cord gets close to showing I would replace the tire. I am not defending anyone, only trying to explain what is happening.

[spyderchick]

Brian, the cracks that are developing are deep and in my case you could see the cord. I thought it was a symptom of a tire that had been mounted and then remounted. This thread shows that it is an endemic problem with Dunlops. I agree that it is up to the individual rider to choose a comfort level with the equipment, but this is something that Dunlop ought to look at on a serious level. If there is a problem with the compound, they can and should solve the issue. Will this keep me and Roger from mounting Dunlops on our machines? Until the problem is solved, that is a definite yes. I'm not a really good risk taker in this type of situation.  

[Super Dave]

I really haven't used a Dunlop to race on in quite a while, however, I can make this statement.  Dunlop tires seemed to have this "split" happen forever.  As I remember, it was just a spot that where the exterior of the tire was overlapped when being placed on the carcass.  Wasn't a problem then.  And that was in the days of bias ply tires when tires would get really hot just from rolling in a straight line.

[r6_philly]

I really haven't used a Dunlop to race on in quite a while, however, I can make this statement.  Dunlop tires seemed to have this "split" happen forever.  As I remember, it was just a spot that where the exterior of the tire was overlapped when being placed on the carcass.  Wasn't a problem then.  And that was in the days of bias ply tires when tires would get really hot just from rolling in a straight line.

I understand the reason why it happens. But if it has been happening for years, wouldn't think they would try to come up with a solution?  I liked dunlops, but just haven't had the comfort level and the confidence since that happened. It seems to be a slight flaw in the manufacturing process, maybe they ought to proper address it instead of just saying "its harmless"

[Super Dave]

I can't give a good answer, I use Michelin tires from Mason Racin' Tires with Chicken Hawk way cool warmers.  I think I have it made.   ;D

[tzracer]

I have used Dunlops since 1991. I have never had the wrap line appear. Most of that time I was on slicks, but have been using 208GPs starting last year on my RC51.

When I raced karts, the tires I used always showed the wrap line (Goodyear tires).

[tzracer]

Brian, the cracks that are developing are deep and in my case you could see the cord. I thought it was a symptom of a tire that had been mounted and then remounted. This thread shows that it is an endemic problem with Dunlops. I agree that it is up to the individual rider to choose a comfort level with the equipment, but this is something that Dunlop ought to look at on a serious level. If there is a problem with the compound, they can and should solve the issue. Will this keep me and Roger from mounting Dunlops on our machines? Until the problem is solved, that is a definite yes. I'm not a really good risk taker in this type of situation.  

I would not call the situation endemic. Is there really a problem? Were all the tires purchased from a track vendor or from a dealer or mail order? Is it just 208s? How many tires? More so than other brands? The same or different lots of tires? What percentage of tires does it happen to? It would take a study of all the evidence.

If it makes you feel better, use different tires, but at this point I think it is a bit of a stretch to call it a problem with Dunlop tires. I have used about 8 sets of 208s starting last year, I have had no problems.

[r6_philly]

I would not call the situation endemic. Is there really a problem? Were all the tires purchased from a track vendor or from a dealer or mail order? Is it just 208s? How many tires? More so than other brands? The same or different lots of tires? What percentage of tires does it happen to? It would take a study of all the evidence.

If it makes you feel better, use different tires, but at this point I think it is a bit of a stretch to call it a problem with Dunlop tires. I have used about 8 sets of 208s starting last year, I have had no problems.

its also kind of a stretch for you to give one explanation to a seemingly common symptom without examine each of the tire mentioned in this thread.

So just to go on a generalization based on insufficient evidence... there are a slew of people chiming in with what seemingly to be the same problem with 207GP and 208GP's. But no one mentioned another brand of tire with the same problem

Lets leave the sketchy conclusion alone