New Michelin Power Cup Tubeless: GP5K S TR competitor

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alanyu
Posts: 1499
Joined: Thu Jun 06, 2019 1:10 pm

by alanyu

Ah yes, you mentioned the sidewall issue, which I forgot. Since I wanted to use these tyres in crits, the narrow tread will be a problem and there will be a risk. I just wrote to bike24 and will return them tomorrow.

by Weenie


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pmprego
Posts: 2508
Joined: Mon Jan 21, 2019 3:16 pm

by pmprego

alanyu wrote:
Sun Jun 19, 2022 3:54 pm
Ah yes, you mentioned the sidewall issue, which I forgot. Since I wanted to use these tyres in crits, the narrow tread will be a problem and there will be a risk. I just wrote to bike24 and will return them tomorrow.
Thinking of doing the same

Yoln
Posts: 965
Joined: Thu Nov 14, 2019 10:26 pm

by Yoln

pmprego wrote:
Sun Jun 19, 2022 3:59 pm
alanyu wrote:
Sun Jun 19, 2022 3:54 pm
Ah yes, you mentioned the sidewall issue, which I forgot. Since I wanted to use these tyres in crits, the narrow tread will be a problem and there will be a risk. I just wrote to bike24 and will return them tomorrow.
Thinking of doing the same
Even though I'm worried about the oversize issue on wide rims, I don't think the thread with is an issue at all.

Corsa speed are the crit king tires, and they have exactly the same tread width
Litespeed Gravel Ultimate : https://tinyurl.com/zvxxy8zk
Wilier “Cento Ramato“ : https://tinyurl.com/29vs8vre
#RETIRED# Lynskey “the Do-it-all Helix” 🧬:https://tinyurl.com/bdmb5y24

alanyu
Posts: 1499
Joined: Thu Jun 06, 2019 1:10 pm

by alanyu

Yoln wrote:
Sun Jun 19, 2022 5:01 pm
pmprego wrote:
Sun Jun 19, 2022 3:59 pm
alanyu wrote:
Sun Jun 19, 2022 3:54 pm
Ah yes, you mentioned the sidewall issue, which I forgot. Since I wanted to use these tyres in crits, the narrow tread will be a problem and there will be a risk. I just wrote to bike24 and will return them tomorrow.
Thinking of doing the same
Even though I'm worried about the oversize issue on wide rims, I don't think the thread with is an issue at all.

Corsa speed are the crit king tires, and they have exactly the same tread width
In the local crit here, not many people use Corsa Speed. The road is averaged with a bit stone and sand from the side.

Maddie
Posts: 1520
Joined: Tue Oct 17, 2017 5:44 am

by Maddie

alanyu wrote:
Yoln wrote:
Sun Jun 19, 2022 5:01 pm
pmprego wrote:
Sun Jun 19, 2022 3:59 pm
alanyu wrote:
Sun Jun 19, 2022 3:54 pm
Ah yes, you mentioned the sidewall issue, which I forgot. Since I wanted to use these tyres in crits, the narrow tread will be a problem and there will be a risk. I just wrote to bike24 and will return them tomorrow.
Thinking of doing the same
Even though I'm worried about the oversize issue on wide rims, I don't think the thread with is an issue at all.

Corsa speed are the crit king tires, and they have exactly the same tread width
In the local crit here, not many people use Corsa Speed. The road is averaged with a bit stone and sand from the side.
You can hardly blame the grip of a tire when you slide out on a sandy corner. Even Corsa Speed wouldn't help there.

What tires are used on your local crit scene?

alanyu
Posts: 1499
Joined: Thu Jun 06, 2019 1:10 pm

by alanyu

Maddie wrote:
Sun Jun 19, 2022 5:42 pm
alanyu wrote:
Yoln wrote:
Sun Jun 19, 2022 5:01 pm
pmprego wrote:
Sun Jun 19, 2022 3:59 pm


Thinking of doing the same
Even though I'm worried about the oversize issue on wide rims, I don't think the thread with is an issue at all.

Corsa speed are the crit king tires, and they have exactly the same tread width
In the local crit here, not many people use Corsa Speed. The road is averaged with a bit stone and sand from the side.
You can hardly blame the grip of a tire when you slide out on a sandy corner. Even Corsa Speed wouldn't help there.

What tires are used on your local crit scene?
I've used old Pro one, GP5k TL, kenda Valkyrie TL, and Pzero Race TLR, in which GP5k TL is the only one brought me trouble. I don't corner through the real sandy/gravel part.

TobinHatesYou
Posts: 12444
Joined: Mon Jul 24, 2017 12:02 pm

by TobinHatesYou

Yoln wrote:
Sun Jun 19, 2022 5:01 pm

Even though I'm worried about the oversize issue on wide rims, I don't think the thread with is an issue at all.

Corsa speed are the crit king tires, and they have exactly the same tread width
That’s silly of you. The narrow tread cap is made much much worse on the Power Cup because it’s a 29mm tire. Corsa Speeds are probably around 26mm on my SES 5.6. I wouldn’t use Corsa Speeds on 21mm internal rims either.

If you’re having trouble visualizing this. Imagine a 300mm wide tire with a tread cap as narrow as a Corsa Speed. If you lean even the slightest amount, you’re riding bare casing/sidewall.

Aress
Posts: 117
Joined: Wed Jan 20, 2021 8:26 am

by Aress

So I just got the new Power Cups (tube type) on my wheels:
At 5.5bars 19ID, they measured 27mm on the money
For comparison my old GP5Ks measured 26.1mm

BigBoyND
Posts: 1336
Joined: Mon May 31, 2021 1:51 am
Location: Berlin, DE

by BigBoyND

TobinHatesYou wrote:
Sun Jun 19, 2022 7:11 pm
Yoln wrote:
Sun Jun 19, 2022 5:01 pm

Even though I'm worried about the oversize issue on wide rims, I don't think the thread with is an issue at all.

Corsa speed are the crit king tires, and they have exactly the same tread width
That’s silly of you. The narrow tread cap is made much much worse on the Power Cup because it’s a 29mm tire. Corsa Speeds are probably around 26mm on my SES 5.6. I wouldn’t use Corsa Speeds on 21mm internal rims either.

If you’re having trouble visualizing this. Imagine a 300mm wide tire with a tread cap as narrow as a Corsa Speed. If you lean even the slightest amount, you’re riding bare casing/sidewall.
Take a look at BRR. It's nearly the same as a % of case width, not in absolute terms.

allrandomletters
Posts: 67
Joined: Thu Jul 15, 2021 2:46 pm

by allrandomletters

My 28mm Power Cup TL measured 31.0mm mounted on 25mm internal hookless rims. Took them out for 70 miles yesterday, rolling hills and twisties. The tread wear looks to stay just inside the tread cap. These could take a few more degrees of lean angle. Measured them again this morning at 31.4mm after a weekend of riding.

The tires felt very fast and comfortable during the ride.

Do these tires have a rotation direction indicator hidden somewhere? I gave up looking for it and just mounted them. I suppose since they are completely slick, the direction does not matter?
20220621_073635.jpg

Yoln
Posts: 965
Joined: Thu Nov 14, 2019 10:26 pm

by Yoln

allrandomletters wrote:
Tue Jun 21, 2022 3:02 pm
My 28mm Power Cup TL measured 31.0mm mounted on 25mm internal hookless rims. Took them out for 70 miles yesterday, rolling hills and twisties. The tread wear looks to stay just inside the tread cap. These could take a few more degrees of lean angle. Measured them again this morning at 31.4mm after a weekend of riding.

The tires felt very fast and comfortable during the ride.

Do these tires have a rotation direction indicator hidden somewhere? I gave up looking for it and just mounted them. I suppose since they are completely slick, the direction does not matter?
20220621_073635.jpg
No direction on slick tires (as long as they don't have aero artifacts, like the GP5k).

Even knoby tires can be mounted both directions. For gravel Rene Herse for exemple they you say that recommended (arrow of the tread pointing forward) favors speed and wet-grip on asphalt (better water flow). But backwards mounting favors grip in muddy conditions.
Litespeed Gravel Ultimate : https://tinyurl.com/zvxxy8zk
Wilier “Cento Ramato“ : https://tinyurl.com/29vs8vre
#RETIRED# Lynskey “the Do-it-all Helix” 🧬:https://tinyurl.com/bdmb5y24

Aress
Posts: 117
Joined: Wed Jan 20, 2021 8:26 am

by Aress

allrandomletters wrote:
Tue Jun 21, 2022 3:02 pm
My 28mm Power Cup TL measured 31.0mm mounted on 25mm internal hookless rims. Took them out for 70 miles yesterday, rolling hills and twisties. The tread wear looks to stay just inside the tread cap. These could take a few more degrees of lean angle. Measured them again this morning at 31.4mm after a weekend of riding.

The tires felt very fast and comfortable during the ride.

Do these tires have a rotation direction indicator hidden somewhere? I gave up looking for it and just mounted them. I suppose since they are completely slick, the direction does not matter?
20220621_073635.jpg

The tread wear stays in the center because if you lean too much the bike will naturally get back up
I have the same feedback as you but its a bummer i cant corner as hard as i used to one my old GP5K

Hexsense
Posts: 3254
Joined: Wed Dec 30, 2015 12:41 am
Location: USA

by Hexsense

Which wheel will likely face more lean angle? Front or back?
I guess it's the back, right? because front wheel countersteer out of the corner?

I'm still waiting to try mixed brand combo.
GP5000 front for smaller size and aero shaped tread pattern.
Michelin rear because the size and aero stripe doesn't matter as much.

But I'm not sure if that make sense, tread width wise.

FlatlandClimber
Posts: 2491
Joined: Tue Mar 31, 2020 3:37 pm

by FlatlandClimber

Michelin front/ Conti back however doesn't sound like the right way of doing it. At least not the fastest way
Cervelo P5 Disc (2021) 9.1kg
Factor Ostro Gravel (2023) 8.0kg
S-Works SL8 (2023) 6.3kg

*weights are race ready, size 58/L.
Sold: Venge, S5 Disc, Roubaix Team, Open WI.DE, Émonda, Shiv TT, Crux, Aethos, SL7

by Weenie


Visit starbike.com Online Retailer for HighEnd cycling components
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TobinHatesYou
Posts: 12444
Joined: Mon Jul 24, 2017 12:02 pm

by TobinHatesYou

BigBoyND wrote:
Tue Jun 21, 2022 6:00 am

Take a look at BRR. It's nearly the same as a % of case width, not in absolute terms.

Tires behave differently when inflated. A 25mm Corsa Speed G2.0 measures something like 27.5mm on the RSL 37s. My Power Cups measure 29.5mm. That 2mm difference in diameter equates to roughly 6mm in circumference. With a vulcanized tire, I would bet the portion of the casing under the tread stretches less than the thinner sidewalls also.

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