What caused this tyre damage

[dangerous]

OK then the pic below is a D220 (sport/tourer) on my VTR 1000 tyre pressure was correct at 42psi, Now I've had balls of rubber form being at the track and have melted the sides but this looks more like the tread wants too peal off of is being torn, maybe a twin thing?
Ulta the pressure soften the rear suspension....... what do you lot reckon
BTW..... it was a quick ride over the port hills today aye ;)

[Two Smoker]

Just looks like it has been under hard acceleration in corners on the track..... dont worry its normal.....

[JohnBoy]

dont for get having a big twin the power to the ground is not as linear as a four.
so your tyres will take a bit of a caining esp if you are going for a decent walk through the hills.
my bike when the suspension is "having a bad hair day" (ie when i think i know what i am doing and try and hot it up for a track day :laugh: ) my tyres screw up really badly but not as bad as from what i can see in your pics.
the only thing is the rear shock, just make sure its working ok.
i dont know much about the VTR1000's but i reconmend that if your susp is as adjustible as mine is to not muck with it, unless you know exactly what your doing!

[bluninja]

dont for get having a big twin the power to the ground is not as linear as a four.

Errrr...really? With a twin you basically get 2 power pulses per engine rotation as opposed to 4. The common theory goes that these pulses are harder and stress the tyre more than a 4, but that the 'gap' between the pulses is bigger and so gives the tyre a chance to recover grip better than an i4.

As for linear power delivery...that's more a factor of the engine set up than whether it's a twin or four. My RSVR has very linear power delivery...it just accelerates with no obvious sudden jerk at certain revs.....unlike my ZX9R which would accelarate hard and then go into warp drive over 8000 revs.

As for the tyre I don't see anything abnormal about the wear....but then what would I know. :doh:

[Zapf]

the edge of the tread blocks is getting chew off, and that is usually due to hard driving / riding. And that the blocks are moving under acceleration, hence race type tires have blocks that are inter-connected or basiclly slicks with grooves to reduce their movements.

If you are getting this very often with your style of riding you should look at tires with bigger cornering blocks when the time comes to replace them.

Ermm and looking at the tread patten carefully, its looks like the patten is designed so that when you have tire slipperage, the block edges are designed to bite to your cornering line at around 45 degree to resist the rear swinging out.

One reason perhaps why you see there is no edge damage done to the upper left part of each of those grooves that had rubber chewed off, as the block would have moved so much during corning that it would have closed off that part of the tread, and the 2 tread blocks would be acting as one.

well my 2c :scooter:

[White trash]

OK then the pic below is a D220 (sport/tourer) on my VTR 1000 tyre pressure was correct at 42psi, Now I've had balls of rubber form being at the track and have melted the sides but this looks more like the tread wants too peal off of is being torn, maybe a twin thing?
Ulta the pressure soften the rear suspension....... what do you lot reckon
BTW..... it was a quick ride over the port hills today aye ;)

42psi is too much. That's the maximum the tyre can be inflated to, not what it should be inflated to.

[wari]

LOokes like a badd case of hYdrocillitiss to me ... :spudwave:

[manuboy]

Two things - me thinks its related to the tyre struggling to cope with the pendulum effect of your beer pot changing direction mid corner, followed up by a dose of "mynewbootsmakemecornerlikethereisnotomorrow-itis". :shake:

oh yeah... and those tyres are dragging a honda around... :bash:

[Kickaha]

42psi is too much. That's the maximum the tyre can be inflated to, not what it should be inflated to.


He has to run maximum pressure cause all the neons on his bike weigh so much. :bleh:

[dangerous]

42psi is too much. That's the maximum the tyre can be inflated to, not what it should be inflated to.
narp......says on the sticker on the chain gaurd what tyre's to use and the pressure that they should be kept at... 36 frount and 42 rear, same with passanger. I know for a jappa it does sound highish, but hell i run 45psi in the Guzzi makes cornering way better but it is a much heavier bike.

[dangerous]

Two things - me thinks its related to the tyre struggling to cope with the pendulum effect of your beer pot changing direction mid corner, followed up by a dose of "mynewbootsmakemecornerlikethereisnotomorrow-itis". :shake:

oh yeah... and those tyres are dragging a honda around... :bash:
and where were you....... ohhh thats right 5 fuking k's behind the beer potted new boot wereing honda.... funny we left at the same time :finger:

ps: oh yeah and you are a couple years younger than me too.... *shakes head slowly* suzuki riders huh

[dangerous]

He has to run maximum pressure cause all the neons on his bike weigh so much. :bleh:
fuk me whats this....... dump on dangerous night, cant get away from you lot can I...... but then theres a common facter showing through here..... suzuki riders :rolleyes:

[TwoSeven]

Touring tires are generally a high pressure aint they. Its not a multi-compound tire with the soft edges. Kind of looks as if its got tar scalding on it.

[laRIKin]

If it was my tyre and it kept on looking like that, I would put 2 more psi in.
And see if it went away.
Remember it was a hot weekend down here and the roads were pretty hot,
so it is probably normal.

[Two Smoker]

You dont need to worry about it. My rear tyre was the same as yours but as you can see its fine now...

My front was really balled up, but now its fine (after 2 hard road rides)

Dont worry about it :niceone:

[Marknz]

42psi is too much. That's the maximum the tyre can be inflated to, not what it should be inflated to.

36F 42R is the "recommended" settings for a VTR1000 as per Mr Honda, regardless of what tyres you have.

That said, I ride the road with less than that, and even less again if I'm on the track.

[dangerous]

Well to be honest I only posted this thread for something to do... but having said that it is interesting hering different opions on these things.
Now I know what did the damage to the tyres... my riding, but they are a sport/tourer tyre so ya think they would hold up a bit better.... like I wouldent be happy with a tyre any harder on the rear altho I am thinking bout Metzler MEz4 again as I managed 10,000k on the Guzzi out of them but they may not be suited to a lighter bike.

A lot of you guys dis Dunlop.... why is that, I have been inpressed with these tyres, they have never sliped or given any trouble the only other time I used Dunlop was in Oz on the 97 VFR, and again they were great but dident do the damage that the VTR does... but I guess thats twins for ya they are harder on tyres.

ps: on the track the tyres tend to were a lot smother ie: the usual balls of rubber, so on the rd I asume that the tering/chunky look is due to a rougher surface than a track.

[scroter]

im a dunlop disser and your tyres look about the same wear as when i took the dunlops off my bike but i didnt take them off cause of the way they were wearing. I took them off cause they sucked. i had mez4s on my old TL and they were sweet and lasted ages. the TL is less than 10 kgs heavier then the VTR.

[vifferman]

Darryl,

I was running 36F/42R on my VTR, with Avon Azaros on, but after trying 40 in the rear and then going back to 42, it felt better with 40 so I stuck with that. I found with 42 in the rear it felt like it was walking or sliding slightly on the road surface.
But that's Avons, not Dunlops, so I recommend you try altering the pressure 1 or 2 psi at a time and see how it feels, as that's what it's all about. (That, and looking after your tyres: they'll wear faster and you'll get cracking around the blocks if you run them at "boy racer" pressures.)

[dangerous]

im a dunlop disser I took them off cause they sucked.
Yeah mate but why??? what dident you like about them?
So far no probs with the Dunlops but with the MEz4 rear and MEz3 frount on the Guzzi I have more than once roled the rear of the side.... meaning a very tight clenching of the sfinxter mussel and a wee slid, but still rate the Metzler.

[scroter]

Yeah mate but why??? what dident you like about them?
So far no probs with the Dunlops but with the MEz4 rear and MEz3 frount on the Guzzi I have more than once roled the rear of the side.... meaning a very tight clenching of the sfinxter mussel and a wee slid, but still rate the Metzler.

i took them off because of lack of grip, which you dont seem to be complaining about, but my bog standard diablo's dont seem to move around at all. a friend of mine had those tyres on the back of his VTR and was only gettin 5000ks out of them.

[DEATH_INC.]

Funny how different guys/bikes like different tyres.
I HATE Diablo's,most rave about 'em
I've just had a pair of 208's on and love 'em.There's no lack of grip......
I've ridden with a 220 rear on an exup fzr,no prbs dragging the bottom on the ground round corners,even 2 up.

For what it's worth I run 32psi front and 35psi rear on the road.
The wear looks normal to me......