What makes a rear tire wear like this?

[MikeL]

Bad tire they get through at times. Probably the last tire made on a Friday before a 3 day holiday......


                                                                                    MIKE

[Quicksilver]

Have you run that tire on a dyno?  Dyno wheels will do that sort of damage to a tire.

[flh canuck]

I have never seen that kind of damage due to a defective tire. Usually the tire will separate or chunks will come off it the tire is defective. I would send pictures to Dunlop and see what their customer service has to say.

My best "guess" is that the damage was caused by something sharp somewhere on the road. Either way, that tire is toast and time for a new one.

As others have already mentioned, always check the date code when you get a new tire to make sure is has not been sitting in somebodies warehouse for the past 5 years....

[fbn ent]

Have you run that tire on a dyno?  Dyno wheels will do that sort of damage to a tire.

You may be on to something....maybe not dyno but similar. Same all the way around he says.

[FLTRI]

Have you run that tire on a dyno?  Dyno wheels will do that sort of damage to a tire.

We've been dynoing all types of bikes for many years and never seen this caused by the drum.
In fact, the ONLY failures I've seen on the Dyno was due to poor mfg (Brazilian Metzlers and VRubber) tires.
I guess it's possible the bike was run at very low tire pressures long enough to generate excessively high tire temps causing tread separation but I've personally never seen the pictured condition from anything but Bottoming the suspension with a larger-than-stock diameter tire.
Bob

[BUBBIE]

 

REMEMBER That Damage looks the same and is Totally around the tire. Not just in one spot... Answered by the OP...

Surly, He would have remembered Running over something that could have Damaged that amount of the tire...

signed....BUBBIE

[ThumperDeuce]

Ride over anything like this lately?

[Tsani]

If it was a run over, hows the front look?

[Latrobedyna]

Ride over anything like this lately?

We have several grated bridges around where i ride and i never seen them do that to any tires.

[fourthgear]

If it was a run over, hows the front look?

  Good question . I would think he would have mentioned that point .
  If the front is good & no similar markings , as said , send the photo to Dunlap for their viewing , with tire codes . I personally would not trust the tire .

[truck]

I doubt it happened because of an open grate bridge deck or that the front tire would show the same damage. The front doesn't have any "pressure" on it other than when braking and that is something you don't want to do on a steel surface.

[sundog1258]

Tire's date code is 1613. No I haven't ran over any grates that I remember. I am going to take it to the shop that installed it and see if he can warranty it. Gonna be a couple of weeks, real busy right now. Thanks for all the replies, I just thought I should try to educate myself about the tire.
I'm replacing it warranty or not, don't trust it.

[Tsani]

If that code is correct that is a old tire. Week 16 April 15, to April 21, 2013 !!! Or at least it is older than any tire I would run on my bike. Dunlop will not warranty that tire IMHO. They had no control on how it was stored, etc. That shop sold and installed an old tire IMHO.

[qtrracer]

It's less than 2 years old, what am I missing? 

[02roadcling]

If that code is correct that is a old tire. Week 16 April 15, to April 21, 2013 !!! Or at least it is older than any tire I would run on my bike. Dunlop will not warranty that tire IMHO. They had no control on how it was stored, etc. That shop sold and installed an old tire IMHO.

  Hey everybody with not quite 2 year old tires.. better toss them out and buy some new ones so Tsani will make some money off of his Dunlop stock.

   Geez!
   cling 

[Tsani]

I don't run old tires Cling nor do I sell them. I also don't have any Dunlop stock Pal. It's your money. You want to, go ahead. I don't.
Maybe you should warranty it for him.

[02roadcling]

  

[koko3052]

Had a bud that worked where they make heavy truck tires. Said every so often they pull one off the line & spin the crap out of it for a "torture test", it isn't cured yet, then if it don't blow up they just put it back on the line. I got some truck tires that wore like that a few years back... FULL WARRANTY! & a very embarrassed dealer! JMO

[hbkeith]

It's less than 2 years old, what am I missing?

[fourthgear]

I doubt it happened because of an open grate bridge deck or that the front tire would show the same damage. The front doesn't have any "pressure" on it other than when braking and that is something you don't want to do on a steel surface.

  If you ran over something that would cut up a tire like that , the front tire should show the same kind of damage . You make it sound like the front tire has no load from the weight of the motorcycle on it , when we know it has a good deal of weight load on that front tire , also if you run over something to cause that kind of cutting , the front tire would be the first to hit the road hazard , wouldn't you think ?
 
 

[truck]

I doubt it happened because of an open grate bridge deck or that the front tire would show the same damage. The front doesn't have any "pressure" on it other than when braking and that is something you don't want to do on a steel surface.

  If you ran over something that would cut up a tire like that , the front tire should show the same kind of damage . You make it sound like the front tire has no load from the weight of the motorcycle on it , when we know it has a good deal of weight load on that front tire , also if you run over something to cause that kind of cutting , the front tire would be the first to hit the road hazard , wouldn't you think ?
 

I was thinking more along the lines of motive force tearing the rubber. If it was something on the road, the front should look like that too, maybe.

[glens]

... if you run over something to cause that kind of cutting , the front tire would be the first to hit the road hazard , wouldn't you think ?

Unless the front tire just kicked it up.

I'd yank the wheel and look for protruding suspects inside the fender probably before taking any other action.

[fbn ent]

That could save  at the shop.

[Rags722]

I'm still waiting for the OP to answer my question if the "new" tire he mounted was the OEM tire size AND if he has ANY non-OEM do-dads mounted on or near the fender ( like lowered shocks, tow hitch, flag mounts, etc. ) .  What we see may indeed be a tire flaw, but could also be the result of a tire at speed biting into a protrusion every time he hits a good enough bump.  I'm not talking a constant rub, but something like a hitch mount that snags the tire and does not bend.

[clawdog60]

I would sure be showing the pics to a dunlop rep.
I'm going to say something was bad with the compound.
I would think if it was hitting something on the fender it would show more parallel lines or grooves to the tread.