Bridgestone S21's - Page 7 - Kawasaki ZX-10R.net
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post #61 of 70 Old 06-16-2017, 05:18 PM
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going to a track day on sunday...

what pressure do you recommend cold?

if I use a 200, then I will have to raise the front I suppose...
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post #62 of 70 Old 06-16-2017, 05:39 PM
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Taller tire which may or may not benefit your geometry and more contact patch at higher lean angles.
ROGUE RACING Sportbike tires race versus street tires & sizes etc


BTW you guys crack me up with all the reviews of "street tires" while still running maximum tire pressure. It's great stuff!
It's all about the "tip in rate" bro! I thought rider decides that?
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post #63 of 70 Old 06-16-2017, 05:44 PM
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going to a track day on sunday...

what pressure do you recommend cold?

if I use a 200, then I will have to raise the front I suppose...
Before raising the rear, try it like it is. You might like it.
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post #64 of 70 Old 06-17-2017, 07:48 AM
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BTW you guys crack me up with all the reviews of "street tires" while still running maximum tire pressure. It's great stuff!
Not the only one but hey, if people feel like being suicidal riding solo on 36f and 42r, let em. They must be fast on them there pressures too.

JayBoCC2, as for tracking Gen 1 ZX10R on S21's, I have no idea as I never have ridden one. I went with the 04 1KRR instead at that time. Comparing the S21 to 200/60 slicks is a bit unfair especially as you ride that on the Gen 4 which handles and then use the S21's on the old bike. Apples and Oranges you know. ))

As for geometry, not altered my settings for the 200/55, and track pressure, I found 32psii front good but 32psi rear was leading to cold tear so I will try 30 or even 28psi cold in the rear next time. I measure my tires cold. On street 32f and between 32-36 rear pending on what I am doing/carrying.

S21 is the first road sport tire where I don't blow through the center in under 3k kms on a litre bike here in Finland.
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post #65 of 70 Old 06-17-2017, 08:20 PM
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Quote:
Originally Posted by mpp12 View Post
going to a track day on sunday...

what pressure do you recommend cold?

if I use a 200, then I will have to raise the front I suppose...
I recommend talking to the tire vendor or suspension guys at the track and setting your cold PSI's on their recommendations and checking back with them a couple times throughout the day.

Tire pressure varies by tire type, manufacturer, track surfaces, track temp, bike setup. We could only give you a very general ballpark and the local vendors would have a much more specific "ballpark" for you on that day/track.

I think i ran 31 front, 28 rear -- cold pressures on my S21s on a warmish day in november at a abrasive track surface in northern california.
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post #66 of 70 Old 06-18-2017, 06:48 PM
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Rode 31 31. On track. More tire than pilot. Excelent tires no grip issues and no excesive wear

Enviado desde mi LG-D855 mediante Tapatalk
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post #67 of 70 Old 06-18-2017, 06:49 PM
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post #68 of 70 Old 06-19-2017, 08:23 AM
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I recommend talking to the tire vendor or suspension guys at the track and setting your cold PSI's on their recommendations and checking back with them a couple times throughout the day.
You guys are so spoiled ))

Now what is that little kid doing waving a red flag? ;)
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post #69 of 70 Old 07-04-2017, 12:36 AM Thread Starter
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Had a chat with Dave Moss, he said don't drop the rear below 30 unless you have very good indication and reason to do so.


2016 - ZX-10R KRT Winter Edition
https://www.instagram.com/superbike.turtle/
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post #70 of 70 Old 07-04-2017, 10:34 AM
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Runnin 31R and 32F and feels nice...
of course Im a -13sec of track record pace guy..
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