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Discussion Starter #1
I'm no tire or suspension expert so hang with me. I'm running Supercorsa SP's at the moment. I seemed to have had really clean tire wear the first couple track days on them (prior to new suspension). When I upgraded the suspension I started noticing some pulled lip of the tread on the leading edge of the tire. Considering I lost the rear end in 2 of the last 3 track days. I'm beginning to wonder if I'm having some rear grip issues from the setup of the rear shock. The rear tire is getting replaced before the next TD (supercorsa SC V1) and I am hoping to have the suspension setup at the start of the day. I'm wondering if I should do anything before then. I have the ohlins shock extended. I can't remember the number at the moment, I'll have to check my book, but I think it is around 6mm. The forks sit flush with top triple. Could that extra anti-squat be unloading the rear weight bias too much? I forgot to take pictures this morning. I'll update with some tonight when I get home. I've been running 30F/28R hot off the track.
 

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Probably just a tuning issue. I'm running 5mm of shim on my 05 600. I don't think the geometry is playing into it, but 6mm might be too much. 4-5 seems to be the sweet spot.
 

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Are the tracks you ride smooth? Rough?
Do the rear push test, see if it comes right back up, springs up hard , or extends slowly.
You might try backing off rebound a little bit.
 

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Discussion Starter #7

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Discussion Starter #9
The lip barely seems raised. I wouldn't be worried about that. You run warmers right?

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It's raised enough to know it isn't normal wear patterns on supercorsa's so I do want to try and get to the bottom of it. Yes I do run warmers.
 

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The SP looks to be listed as a road/track tyre and the SC is basically a race tyre. So you will basically have a totally different tyre to deal with.

I have worn out a lot of SC in the last few years but on small bikes, Aprilia RS125 and CBR250MC22.

On both bikes I have run them as 28R 32F hot off warmers at 3 different tracks.

That probably wont mean much for you. I dont have any suspension adjustments that can be done at the track other than a bit of rear preload, different bikes, rider etc etc.

Honestly looking at your tyre pics your not working the tyre at all, it may be cooling down once off the warmers and you are just getting on throttle hard once the bike is upright again.

I get a lot of raised lip like that but much further out on the tyre. I dont really use the part of the tyre you are concerned about.

I have tried a couple of other brands, with results from not really comfortable with wear to shredding the other. I have had great results with SC, I run a SC1 or SC2 rear depending on which track im at.

As you are starting with a different tyre try it and see what it does.
 

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Discussion Starter #12
That raised lip does travel down the tread. You can see it on the bottom right of the last picture. The last track day I couldn't keep heat in the tires before the high side. overcast, low temps, slow pace and then rain, so I no doubt struggled with grip. I'll just leave the geometry as is for now. I still plan to work with the suspension guy at the track being it hasn't been professionally setup since installing valves and shock. I'm interested to see the difference in the SP vs. SC, from the sound if it, they are alike in tread pattern and not much else. Thanks for the input.
 

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The tyre I raced on yesterday has only a about one inch of lip at the very outside, but it was drizzling rain for the last two races so had backed off a little and may have scrubbed off some more.

It would great to get the info from the suspension/tyre experts as to causes, solutions.

not that I can do much about it but the things are not cheap and they dont last long so if anything can be done to extend life then Im all for it.
 

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I'm interested to see the difference in the SP vs. SC, from the sound if it, they are alike in tread pattern and not much else. Thanks for the input.
The SC's is true race rubber, grip will be phenomenally increased over the SPs. Don't get me wrong the SP is probably hands down the best mountain pass tire out there, but it isn't what you're about to experience with the SC's. Recommended tire pressure with hot warmers are 24R/34F on the east coast as a starting point.

I typically run an SC1 front and SC2 in the rear. It wears 2 rears to every 1 front. If I'm racing sprints it's SC1 front with either SC1 or SC0's as a rear depending if it's over 90°.



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Discussion Starter #17
The tyre I raced on yesterday has only a about one inch of lip at the very outside, but it was drizzling rain for the last two races so had backed off a little and may have scrubbed off some more.



It would great to get the info from the suspension/tyre experts as to causes, solutions.



not that I can do much about it but the things are not cheap and they dont last long so if anything can be done to extend life then Im all for it.

I'll let you know what they tell me. It will be a little while. I still have another month or so of physical therapy before I can probably get back on the bike. Tires get expensive quick so I'm all about making them last.

The SC's is true race rubber, grip will be phenomenally increased over the SPs. Don't get me wrong the SP is probably hands down the best mountain pass tire out there, but it isn't what you're about to experience with the SC's. Recommended tire pressure with hot warmers are 24R/34F on the east coast as a starting point.

I typically run an SC1 front and SC2 in the rear. It wears 2 rears to every 1 front. If I'm racing sprints it's SC1 front with either SC1 or SC0's as a rear depending if it's over 90°.



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Thanks LW. I will be starting out with SP on the front and SC on the rear being the front still has fair amount of life in it. Then switch over to SC on front as well. Maybe the better rubber will help my rear traction, but realistically the issue is me, not the tire.
 

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I'll let you know what they tell me. It will be a little while. I still have another month or so of physical therapy before I can probably get back on the bike. Tires get expensive quick so I'm all about making them last.




Thanks LW. I will be starting out with SP on the front and SC on the rear being the front still has fair amount of life in it. Then switch over to SC on front as well. Maybe the better rubber will help my rear traction, but realistically the issue is me, not the tire.
I have moto that Tyres are cheaper than time off work. I would go with a new SC1 front as well if I were you. My last crash injury was three months off work, I can pay for a set of tyres in 3 days of work.
 

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I have moto that Tyres are cheaper than time off work. I would go with a new SC1 front as well if I were you. My last crash injury was three months off work, I can pay for a set of tyres in 3 days of work.
Just about to say the same thing. Go ahead and get the SC1 front, sell the SP. You would rather have a front that sticks under load...I can handle a rear sliding about, but the front is key.

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Discussion Starter #20
Just about to say the same thing. Go ahead and get the SC1 front, sell the SP. You would rather have a front that sticks under load...I can handle a rear sliding about, but the front is key.

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Valid points, although the rear sliding is what put me where I am now lol.

Like I said before the issue is more me than lack of traction in the tires. I do like knowing I have the same rubber up front and out back. It's just one less variable to have. Confidence is key.
 
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