This one shows the tearing pretty good.. the first two pics don't look TOO bad - but it looks worse in person..

 

WOW...

 

ride slower, that should make them last

 

Left side wear is pretty good.. But the track I was on only has 2 left handers.. And niether are real high speed..

 

front right doesn't look bad..

 

:dunno

 

seriously, I don't see anything wrong, you might be getting on the gas a little earlier on the right turns is all. If it was a suspension problem wouldn't the tire be the same on both sides?

 

ride slower, that should make them last

I was definitely riding slower on the tires since I really didn't have too much confidence in them.. But you can only go so slow!!

 

My tires do the same thing after a good hard ride in the mountains but not quite as bad as yours.... I have the same tire too.. As soon as these wear out I am moving back over to Metzler's... I had them on my RC-51 and fell in love....

 

seriously, I don't see anything wrong, you might be getting on the gas a little earlier on the left turns is all. If it was a suspension problem wouldn't the tire be the same on both sides?

I'm pretty sure it's suspension..One of the left turns is part of an S section so it's only leaned over on the left for a second or so and then the last left coming into the straight is a slow turn too.. I slide coming out of that turn sometimes too but that side doesn't tear..Probably about a 40mph left hander...

The control riders said my tire was shredded up pretty bad..

 

dont run a 60 series without making the right suspension and geometry changes.

 

I've been having some bad tearing problems, too. Someone else I race with was tearing up rear tires, too, and he backed off the rear compression and said it was better. Have you changed your gearing recently? I dropped two teeth on the front sprocket, so I think that is what is actually causing the tearing... More power to the rear wheel.

I also found that after you have torn up the rear tire, no amount of setup changes will make the tearing go away... Gotta get some new tires to see if the tearing goes away.

 

I'm pretty sure it's suspension..One of the left turns is part of an S section so it's only leaned over on the left for a second or so and then the last left coming into the straight is a slow turn too.. I slide coming out of that turn sometimes too but that side doesn't tear..Probably about a 40mph left hander...

The control riders said my tire was shredded up pretty bad..

typo on my part, I meant right turns but you quoted me as I edited it.

My tires look like that form street riding but in the middle more. The edges look clean (last inch is not feathered, just scrubbed) . I just figured they were real soft and I was running them maybe a bit low on pressure for the street (29psi). I know when I've rode Palomar Mt. with some of the San Diego crew the tires always look like that but almost all the way across.

 

maybe your rear pressure was too high. i thought you were supposed to run 28 or 29 rear when cold. i tend to run 31 front and 29 rear during trackdays.

Also this year i've heard talk of people checking pressure while hot fresh in to the pits (pirelli supplier and dunlop supplier) looking for 30psi hot. maybe it's just a little fad for now but it seems to be getting more and more popular. assuming a couple psi increase for being hot they'd basically be shooting for about 28 again implying your pressure may be high.

 

definatly check suspension as that would be my first guess...also your psi you're running. what do you weight also? more weight=more heat

 

I would guess suspension. Compression damping may be high. But as asked, what is your weight, and what were your sag settings? If your sag is in the right range for your weight/style of riding, I'd seriously look at your compression damping. Aside from that, are you getting on the throttle faster on one side than the other? The "tearing" looks more power related than g-force side load. Maybe too agressive a throttle hand on exit?

 

Maybe too agressive a throttle hand on exit?

yeeppp....thats Anonymous's problem !!!!

too aggresive at right lean....try to softer....

 

looks a bit like cold tearing to me.

looks a bit like cold tearing to me. What was the outside temp and were the tires warmed up?

 

Looks like cold rolls.

The tire wont get warm enough all the way through. i´ll bet u get a really hot tire on the surface but not all the way. that will get these effects.

Its not really a problem though except for the bad wear, my exprience is that grip is still good.

 

post this on WERA's msg board and you'll get more 'educated' answers

 

Ok.. I'll try to answer all the questions in this post.. And R6pimp - thanks for the advice - I'll try over there too!

My sag has not been "set" to my weight offically.. But the people at the track said it looked about normal. My preload in the rear is all the way up due to my weight - so I don't have much static sag - if any at all. I weigh about 175 without gear on so I'd probably be around 190 geared up. I'm definitely not getting on the throttle too early - and if I was doing it that bad - my bike would be on the ground by now. As far as the gearing goes - I have been +2 in the rear for quite some time now..

As far as tire pressures - Dunlop reccomends 29 rear and 31 front(cold) for the tires I have.. I don't think that was my problem because if anything the higher pressure wouldn't make them tear as bad. Outside temps were mid 70's and I was giving the tires 2-3 laps to warm up before I really started beating on them..

:dunno

 

post this on WERA's msg board and you'll get more 'educated' answers

Yes, but that IS cold tearing.

 

http://www.crstuning.com/tire-wear.html

have fun

 

http://www.crstuning.com/tire-wear.html

have fun

Thanks for that link Dae - My tire looks exactly like the example they have for "Shock spring tear". Does not appear to be cold tearing..

SHOCK SPRING TEAR
When the shock spring is too soft or too hard, the tire carcass is put under extreme duress to the point where the tire shreds and melts. This can be determined by measuring sag to see if the target number cannot be reached firstly, without considerably adding preload to the spring or secondly, if all the preload is off the spring.

The picture attached is from that website - from left to right..
Cold tear, Shock spring tear, Shock rebound tear, Hot tear

I need to get my sag done!!