650b tyres

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Paddypurplepuss
Posts: 10
Joined: Mon Nov 04, 2019 7:27 pm

by Paddypurplepuss

Hey guys. So my friend bought a gravelbike recently, A Canyon Grail.
Its a size xs so she can only fit 650b and not 700c.
The problem is she cant seem to find a slick tyre that will be fast enough on winter training rides with the local club.

So the question is - Does anyone here know if its possible to find a tyre thats slick and less than 35c that will fit on a 650b wheel?

Does such a tyre exist? We cant seem to come across anything less than 38c.

Hexsense
Posts: 1021
Joined: Wed Dec 30, 2015 12:41 am

by Hexsense

Atleast one option
Continental GP5000 650b. Bikeinn and probikekit sell them for under $40 each (exclude shipping).

They are offered in 25mm and 28mm. I suggest the 28mm one because 25mm will probably make the bike that design for big tire too low to the ground and can cause pedal strike in the corner.
PS. search for 28mm and not 28c. The c is a misnomer from 700c. For 650b at 28mm width it is either 28mm or 28b

by Weenie


Marin
Posts: 3556
Joined: Wed Jan 22, 2014 11:48 am
Location: Vienna Austria

by Marin

Get 38 Pari-Motos and set them up tubeless or with light 26" tubes. They will be *much* faster than the Gatorskins / 4 Seasons other riders might be on.

Hexsense
Posts: 1021
Joined: Wed Dec 30, 2015 12:41 am

by Hexsense

Marin wrote:
Wed Nov 13, 2019 12:07 pm
Get 38 Pari-Motos and set them up tubeless or with light 26" tubes. They will be *much* faster than the Gatorskins / 4 Seasons other riders might be on.
I tried, using 35mm slick fast rolling on road ride.
Compare to slimmer tires, it roll faster up to 20 km/h. At least as fast up to 24 km/h. Than afterward, the wide profile kill the aerodynamic hard.
my 25c tire on 30mm wide rim is much faster at 32 km/h and above.

For road riding at decent speed, 28mm and narrower is still a better choice.

WorkonSunday
Posts: 145
Joined: Tue Jan 16, 2018 4:39 pm

by WorkonSunday

my wife uses 650b on her bike. Conti 5000 28mm and Schwalbe Pro One 25mm. i think those are plenty fast. Conti is tubed type because we had hard time putting the Pro One on the Reynolds ATR. She used Fulcrum Red Passion 3 650b previously with the Pro One and it was very tight fit. Conti is much easier to fit.

got both from bike24:
https://www.bike24.com/p2196149.html
https://www.bike24.com/p2305173.html
In the house: Colnago V1r, Colnago A1r, Wilier Cento1 Air, Scott Scale 700SL, Bianchi FSE, Colnago Concept, Colnago A1r, Specialized Ruze Pro, Wilier GTR, Argon 18 E117 Tri+, Brompton B75

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