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 ) 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.

[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

[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".

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

[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.

[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".

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

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

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.

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

[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