New Michelin Power Cup Tubeless: GP5K S TR competitor

Wheels, Tires, Tubes, Tubeless, Tubs, Spokes, Hookless, Hubs, and more!

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The spirit of this board is to compile and organize wheels and tires related discussions.

If a new wheel tech is released, (say for example, TPU tubes, a brand new tire, or a new rim standard), feel free to start the discussion in the popular "Road". Your topic will eventually be moved here!
RickySpanish
Posts: 7
Joined: Tue Nov 23, 2021 3:18 pm

by RickySpanish

Anyone using the Michelins on their Giant SLR1 hookless rims? What mileage are you getting out of them?

BigBoyND
Posts: 1347
Joined: Mon May 31, 2021 1:51 am
Location: Berlin, DE

by BigBoyND

TobinHatesYou wrote:
Tue Nov 01, 2022 10:03 am
I’m still wondering how BRR and I have found 25mm Power Cups to measure much wider than others. My 25s measured 29.3mm on 21mm (28mm external) Aeolus RSL 37s. BRR’s 25s measured 27.7mm on a 17.8mm rim.

How is the same WAM being achieved on both 21mm and 17.8mm rims??

And my opinion on the tread width still hasn’t changed.
Could the hooks on your RSL wheels be shorter than typical? BRR uses an aluminum rim and I've found most aluminum hooks to be much thinner/shorter than carbon ones. For example on my wife's HED JET wheels (aluminum rim) her GP5000 show slightly more of the sidewall (the textured rubber next to the bead) than on my carbon DT wheels. Essentially less of the tire is inside the rim.

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BigBoyND
Posts: 1347
Joined: Mon May 31, 2021 1:51 am
Location: Berlin, DE

by BigBoyND

Just mounted mine up with tubes instead of sealant, to see how they look and measure. Bought them locally from someone who rode them "100km" so they should be a bit stretched.

At 80psi with tubes, the tan 28mm TLR measured an average of 30.4mm on 21mm hooked internal rims.

The measured size difference between the 25mm and 28mm tires seems to be less than the nominal 3mm difference.

mrlobber
Posts: 1928
Joined: Sat Oct 23, 2010 9:36 am
Location: Where the permanent autumn is

by mrlobber

I think it's sort of established now already that somehow the 25mm Michelins are way over their nominal width, while 28mm and above are closer to what you'd expect from modern tyre actual measurements on 20+ mm internals.
Minimum bike categories required in the stable:
Aero bike | GC bike | GC rim bike | Climbing bike | Climbing rim bike | Classics bike | Gravel bike | TT bike | Indoors bike

BigBoyND
Posts: 1347
Joined: Mon May 31, 2021 1:51 am
Location: Berlin, DE

by BigBoyND

Does anyone have a 30mm size? How did those measure up?

My Venge has about 5mm clearance on all sides with the 28mm (30.4mm measured), so I should be able to run the 30mm size and still be within the mfg recommendation of 4mm clearance. I hope they introduce 30mm with tan sidewalls.

Attaching a picture of 28mm size tread on 21mm iw rims.
Attachments
20221104_082923.jpg

OUGrad05
Posts: 105
Joined: Sat Aug 27, 2022 5:39 pm

by OUGrad05

Anyone happen to know how the 25s and 28s measure on a wheel with 23mm internal width?

choochoo46
Posts: 180
Joined: Fri Mar 15, 2019 4:19 am

by choochoo46

OUGrad05 wrote:
Fri Nov 25, 2022 2:10 am
Anyone happen to know how the 25s and 28s measure on a wheel with 23mm internal width?
Measured width of 25mm Power Cup is 29.8mm on LightBicycle AR56 with 23mm internal and 30mm external rims. 74 psi. Almost new with just 200 miles on the tires.

mrlobber
Posts: 1928
Joined: Sat Oct 23, 2010 9:36 am
Location: Where the permanent autumn is

by mrlobber

BigBoyND wrote:
Thu Nov 03, 2022 4:25 pm
Does anyone have a 30mm size? How did those measure up?
I do, but sitting on the shelf not mounted, as the winter has kicked in already, and the wheels I want them to mount on (23mm IW), are still being built. I'll report back when I have some data, but likely next year :D
Minimum bike categories required in the stable:
Aero bike | GC bike | GC rim bike | Climbing bike | Climbing rim bike | Classics bike | Gravel bike | TT bike | Indoors bike

naavt
Posts: 529
Joined: Sun Nov 25, 2018 6:58 pm

by naavt

My tan wall Power Cups arrived today. My experience with Veloflexes is that the tan walls don't last long, since they become "tinted" and stained by the sealant used, no matter what brand.

For now I'm using VW car tire sealant in another set of wheels with black Pirellis PZero installed (with a great deal of succeess!), but I wanted to know if anyone here is still keeping their tan Michelin sidewalls clean after use, and if yes, which sealant are you using with them.

TurboKoo
Posts: 651
Joined: Wed Oct 29, 2008 7:55 pm

by TurboKoo

naavt wrote:My tan wall Power Cups arrived today. My experience with Veloflexes is that the tan walls don't last long, since they become "tinted" and stained by the sealant used, no matter what brand.

For now I'm using VW car tire sealant in another set of wheels with black Pirellis PZero installed (with a great deal of succeess!), but I wanted to know if anyone here is still keeping their tan Michelin sidewalls clean after use, and if yes, which sealant are you using with them.
They are still clean after 3 months. I have used orange seal. No punctures yet.
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maxima
Posts: 460
Joined: Fri Oct 17, 2008 9:37 am

by maxima

I would like to knows anyone running 23mm Michelin power cup on their TT bikes? What real life width will that be on a 20mm inner width rim? if the 25mm measure up to 28-29mm when inflated for the 1st time..............wonder the 23mm will measure 26-27mm easily

** I just measured my 25mm after 2000Km and realized it measure 30mm!!!!! :shock: :shock: :shock: **
Last edited by maxima on Fri Dec 02, 2022 1:55 am, edited 1 time in total.

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C36
Posts: 2471
Joined: Fri Mar 03, 2017 3:24 am

by C36

maxima wrote:I would like to knows anyone running 23mm Michelin power cup on their TT bikes? What real life width will that be on a 20mm inner width rim? if the 25mm measure up to 28-29mm ..............wonder the 23mm will measure 26-27mm easily
On a 19mm rim they measure 25.1/25.3
After 3000km they must be a bit wider, can check if interested.

naavt
Posts: 529
Joined: Sun Nov 25, 2018 6:58 pm

by naavt

TurboKoo wrote:
Wed Nov 30, 2022 6:27 pm

They are still clean after 3 months. I have used orange seal. No punctures yet.
Thanks

BuffHamster
Posts: 8
Joined: Tue Oct 26, 2021 11:23 am

by BuffHamster

BigBoyND wrote:
Thu Nov 03, 2022 4:25 pm
Does anyone have a 30mm size? How did those measure up?

My Venge has about 5mm clearance on all sides with the 28mm (30.4mm measured), so I should be able to run the 30mm size and still be within the mfg recommendation of 4mm clearance. I hope they introduce 30mm with tan sidewalls.

Attaching a picture of 28mm size tread on 21mm iw rims.
I just installed 30mm onto Winspace D67 wheels which are 21mm ID. Measured up 30.2mm front and 30.3mm rear but will probably expand up to 31mm at most after riding.

Image
Last edited by BuffHamster on Thu Dec 15, 2022 10:10 am, edited 1 time in total.

BigBoyND
Posts: 1347
Joined: Mon May 31, 2021 1:51 am
Location: Berlin, DE

by BigBoyND

Strange sizing by Michelin.

So 25mm blows up to 28mm (3mm over TTS)
Then 28mm blows up to 30mm (2mm over TTS)
And 30mm blows up to... also 30mm (TTS)

by Weenie


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