Thank you. I'm only here for the alpha mantis testing. I mainly outdoors when it's warm LOL

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The top one is the last generation which is what has been tested to be fast. The bottom one is really old and doesn't have black chili compound and will be slower for sure.

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anyone have a chance to test these? from what i am reading better RR worse aerodynamics? is that correct?

I don't think we have any idea yet. The casing itself is clearly different. Does that make a difference? I don't think we know. The tire is wider, so as you would except with the exact same casing, we would assume they roll a bit better.

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I'm hoping Tom A will volunteer to test its CRR. At some point I will A/B aero test it against the old one. One thing leading me to put it off (besides the weather) is that I'm going to have to change the damned tire in order to keep the wheel constant.

Racing 70.3 this weekend with potential rain / thunderstorms. Go SS or GP4000?
Good roads, flat and few turns...

I mean, I am Supersonic although unless you definitely know it is supposed to rain. We are still too far out. I have changed tires race morning before based on latest weather forecast. However, regardless, I always say if you are nervous about it then it is best to go with the option that puts your mind at *ease*

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Thanks, will make the call Friday morning. I'm inclined to go with the SS regardless unless someone says they are a big no no in the rain. If it's raining hard I'll probably lose just as much time slowing down for turns with either tire.

HITS Naples?

Those roads were like glass when I raced it 3 years ago. The SS will roll much better than my gp4000s did.

And this is florida, the weather changes at least every hour.

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I raced IMMT this past year in a torrential downpour on the SS. Never had an issue.

Yes, HITS. I raced last year and roads were in good shape. The course changed now and there's a second transition area at Ave Maria. Not sure if this was the same course 3 years ago.

Good to know, thanks!

Anyone figure out if these are actually the GP TT? I'm looking for new race tires for next season but don't think I have the risk tolerance for a tire without the Vectran breaker layer. This past year I raced on a 23mm GP4ksII on the rear (Super 9) and Attack up front (808 NSW). Tom A's data suggests the Attack may be the best option up front assuming I am not interested in considering the SS (with the assumption that my 808 isn't significantly different from the Flo 90). I'm still left left wondering if the GP TT would be faster. Is it a reasonable to assume the TT falls somewhere between the SS and the Attack?

The TT''s seem to mount up extra wide compared to the Attack and previous gen SS. Without testing it could be speculated that the reduced aero gives up any rolling gain benefit over the GP4ksII

Negative, I guess the best the to do is see if we sent one to Tom A if he would be willing to test it and specifically against a 23mm TT as well. I would be willing to send him one of each that are new, never rolled.

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I guess I'm not really concerned with the crr of the old vs new SS. Unless it has the Veteran belt I'm likely not going that route right now. Maybe I'll work my way there after the GP TT, but I need to figure out if the TT is actually a better choice for me over the Attack.

I got some calipers onto the latest version last night. Mounted to an old skinny rim Hed Jet 90, which should be similar to the original Hed 3, they came out at circa 21.5mm. Originals were only 20.2mm.

My guess is that the new tyre rolls better largely because it's a wider tyre, but in doing so, scuppers all of us hoping to use it on an older skinny rimmed Hed wheel in terms of aero.

that sucks

I assume that you are talking about the 700 x 20C's, yes?

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Yes, the latest 700x20 vs the previous version 700x20.

Thanks for the update. It could actually be a great tire for more modern rims.

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It's perfect for me on a wide rim. I have very tight clearance in the rear with a 23mm rim, and the 20mm SS is a good size for the 26mm wide front also.

I haven't seen Crr test results for the new SS 20 or 23 tires. The recent SS 20c results that TomA just added to his Crr spreadsheet was a newer vintage of the previous SS model. It was not the new for 2017 SS tire. If it turns out this new tire is the GP TT without a Vectran breaker it could roll better than the previous 20c SS.

Bummer on the SS 23c is that it could end up mounting at close to 25mm wide. Or about the same as the GP TT 23c.

I just measured my 2017 23c Supersonic. Mounted on a 17mm internal width rim, at 100psi it's 24.5mm wide..

just measured an H3 with a well seasoned 20mm SS(2015) at 110psi and got 19.65mm