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Old December 30th, 2018, 10:38 AM   #1
DannoXYZ
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MOTM - Nov '17
Race Tyres 2019

Going to start new thread for new year...

Quote:
Originally Posted by Dave Wolfe View Post
Im gonna need a new set when the season starts. Are the pirelli SCs still top dawg?
Not sure, unless they've changed their formulae, they've got tough competition. Talked to couple of MotoAmerica Jr. Cup guys while at Sears Point and they really like Q3+. Going to use those this next season.
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Old December 31st, 2018, 09:14 AM   #2
sharky nrk
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needing to make up my mind on tires this go - SC/rosso vs R11/RS vs GPA/Q3+
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Old December 31st, 2018, 12:34 PM   #3
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MOTM - Nov '17
Why not get some extra wheels and try them all?

Wish we could get D211 GPA/Ntecs in Ninjette sizes. Used those since D207 generation on my CBR600RR for trackdays and they're pretty amazing
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Old December 31st, 2018, 02:29 PM   #4
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Good idea, I'm replacing mine soon. I'll be looking for something that works when it's wet out as well.
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Old January 2nd, 2019, 08:19 AM   #5
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Quote:
Originally Posted by DannoXYZ View Post
Why not get some extra wheels and try them all?

Wish we could get D211 GPA/Ntecs in Ninjette sizes. Used those since D207 generation on my CBR600RR for trackdays and they're pretty amazing
$$$ lol
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Old January 3rd, 2019, 01:54 PM   #6
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I ran the R11 last year and loved them!

Has anyone played with the Michelin Power RS?
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Old January 5th, 2019, 07:16 AM   #7
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R 11 for the win. My personal lap best was set with them and 4 seconds faster than with alphas.
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Old January 5th, 2019, 03:22 PM   #8
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MOTM - Nov '17
Dunlop Q4 reviews
https://www.motorcycle.com/products/...tmax-q4-review
https://it-vision.org/wd/sportmax+q4

Bridgestone R11 review
https://www.cyclenews.com/2018/06/ar...-product-test/
https://www.motorcycle.com/products/...-dot-race-tire
https://ultimatemotorcycling.com/201...1-tire-review/
https://davemosstuning.com/tire-test...idgestone-r11/

Bridgestone S20 review
https://davemosstuning.com/bridgestone-s20-tire-review/

Pirelli SCv2 vs. Competition - http://www.motorcycle-usa.com/2015/0...v2-comparison/

All you've ever wanted to know about tyres
https://davemosstuning.com/category/tires/

Last futzed with by DannoXYZ; January 6th, 2019 at 08:23 PM.
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Old January 5th, 2019, 03:51 PM   #9
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I'm not sure the Q4 is available in small-bike sizes, is it?

Any thoughts on how much better the R11 is compared to the S-20 Evo? I remember a video review where Ari Henning really like the Evo. And I wonder what they're like compared to the Supercorsa SP?
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Old January 10th, 2019, 08:17 AM   #10
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Quote:
Originally Posted by Frank06 View Post
I'm not sure the Q4 is available in small-bike sizes, is it?

Any thoughts on how much better the R11 is compared to the S-20 Evo? I remember a video review where Ari Henning really like the Evo. And I wonder what they're like compared to the Supercorsa SP?
The R11 makes the S20 Evo feel like the sport touring tire it is. I like the S20EVO, and mount a cut set for rain races.
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Old January 10th, 2019, 12:59 PM   #11
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The R11 is a softer compound and a better casing design
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Old January 10th, 2019, 02:05 PM   #12
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MOTM - Nov '17
From talking with Bridgestone rep at track, they said R11 was developed as race-tyre first. Then they added some tread to comply with DOT for those classes requiring DOT-approved tyres.

Info I'm looking for is comparative data between different tyres with: same rider, same track, same day. Even same rider on different days will result in additional variables.

For example for S20 review with Dave Moss (I can't find link now), he mentioned rider using them got 2:11 at Thunderhill East; which is really good for street tyre. But we don't know what kind of rider that was.

In comparison, when Dave was racing 250-Superbike, he got 2:01 on Pirelli slicks. Another data point: Marc Edwards on his 300WSS bike got 2:02 on Q3+ spec tyres. Still looking for some info R11 times.
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Old January 10th, 2019, 02:12 PM   #13
SpotTheDogg
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I don't have back to back, new vs. new, times, but I went about 1.4s under my previous PB on our 1.6mile track. I have gone from S20EVO to RS10 and noticed minimal difference, but the R11 is awesome!
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Old January 10th, 2019, 02:58 PM   #14
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Quote:
Originally Posted by SpotTheDogg View Post
I don't have back to back, new vs. new, times, but I went about 1.4s under my previous PB on our 1.6mile track. I have gone from S20EVO to RS10 and noticed minimal difference, but the R11 is awesome!
Scott, which tire were you running for your previous PB time?
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Old January 10th, 2019, 03:10 PM   #15
SpotTheDogg
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S20 EVO I think... RS10 is the same times and on my Durometer they are the same compound. I have the numbers somewhere.
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Old January 10th, 2019, 03:20 PM   #16
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I was just curious, no big deal. I'm running Alpha's on my 300 (Lonnie's old bike) and will change them this year. I've done a few track days but also hope to do some races this year.
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Old January 10th, 2019, 03:51 PM   #17
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MOTM - Nov '15
Quote:
Originally Posted by SpotTheDogg View Post
S20 EVO I think... RS10 is the same times and on my Durometer they are the same compound. I have the numbers somewhere.
The durometer will not tell you if they are the same compound. It only tells you their relative hardness at the time (and temperature) that you measured them at.
Durometer is not directly related to grip either. Generally the more race-oriented a tire is, the narrower the temperature range at which you get the optimal grip. Of course tires get softer with increased temperature, but that doesn't mean a softer has more grip than one that isn't as soft.
Try thinking about it this way: If softness is the ultimate factor in providing maximum grip then we aren't going to get any softer than rubber that is so hot that it melts. As far as I know melted rubber has very little grip.

To sum it up: Don't get hung up on measuring durometer as an indicator of grip.
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Old January 10th, 2019, 08:46 PM   #18
SpotTheDogg
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Cool, I wouldn’t say I’m hung up on it, but I do enjoy comparing different data from my tires and comparing results.
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Old January 12th, 2019, 01:46 PM   #19
DannoXYZ
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MOTM - Nov '17
Perhaps you can combine durometer reading at operating temps. Most tyres are best between 185-205F.
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