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-   -   Tire - Wheel Size Question (https://www.bikeforums.net/showthread.php?t=1172445)

TigerM 05-07-19 09:40 PM

Tire - Wheel Size Question
 
Hello,

I am looking at changing my bike tires to tubeless. I currently have wheels with 622x20 and tubular tires at 700x26c (26-622). I have confirmed that the wheels are tubeless ready. I am planning on getting the Continental GP5000 TL 25-622 (700x25c). Now I am a bit confused if it will actually fit. The wheel size of 622x20 seems a bit odd.

Would appreciate any info on this.

Thanks a lot and safe riding.

DOS 05-08-19 04:59 AM

The rim width number is likely the internal width — 20mm — of the rim, which is a bit wider than standard road rims (at least historically speaking). 25mm tires would be a good fit and probably will blow up a bit wider than 25mm on those rims. 25mm tubeless Scwalbe tires blow up to about 28mm on my 21mm rims, for example.

Abe_Froman 05-08-19 07:35 AM

Am I the only one wondering how he's going to mount tubeless tires on tubular rims??

alcjphil 05-08-19 07:42 AM


Originally Posted by Abe_Froman (Post 20919675)
Am I the only one wondering how he's going to mount tubeless tires on tubular rims??

Me too. If you have tubular tires you need new wheels to convert to tubeless clinchers

ThermionicScott 05-08-19 08:12 AM

Since the OP made more than one reference to 622 including the wheel, I doubt he actually has tubular tires and just meant to say he has regular tires with tubes.

alcjphil 05-08-19 10:44 AM


Originally Posted by ThermionicScott (Post 20919731)
Since the OP made more than one reference to 622 including the wheel, I doubt he actually has tubular tires and just meant to say he has regular tires with tubes.

That 622 measurement also applies to tubular tires

woodcraft 05-08-19 10:58 AM


Originally Posted by alcjphil (Post 20919949)
That 622 measurement also applies to tubular tires



It doesn't. It refers to a bead seat diameter. Tubular tires have no bead.

They are called 28".

alcjphil 05-08-19 11:08 AM


Originally Posted by woodcraft (Post 20919966)
It doesn't. It refers to a bead seat diameter. Tubular tires have no bead.

They are called 28".

It does:
https://www.probikekit.ca/bicycle-ty.../10780306.html
Tubular tires are sold as 28", 700c, or using ERTO sizing

ThermionicScott 05-08-19 11:38 AM


Originally Posted by alcjphil (Post 20919981)
It does:
https://www.probikekit.ca/bicycle-ty.../10780306.html
Tubular tires are sold as 28", 700c, or using ERTO sizing

That shops will do anything to help clueless shoppers find products doesn't prove much. :)

caloso 05-08-19 11:42 AM

700c, 28in, and 622mm are all the same size. Yes, it's stupidly confusing. (Not to mention that 27' tires are bigger than 28' tires.)

Psimet2001 05-08-19 12:33 PM

Welcome to my nightmare.

OP - unless you're gluing the tires to the rim you don't have tubular tires. Your rim is a 700C rim and says it is tubeless compatible.... then put (700c, 622) tubeless tires on it if you want and then ride them. Stop worrying about the widths. Your rim is a road rim. Put road tubeless on them.

DOS 05-08-19 01:07 PM


Originally Posted by ThermionicScott (Post 20919731)
Since the OP made more than one reference to 622 including the wheel, I doubt he actually has tubular tires and just meant to say he has regular tires with tubes.

I too just assumed OP meant tires with tubes.

ThermionicScott 05-08-19 01:30 PM


Originally Posted by DOS (Post 20920154)
I just assumed OP meant tires with tubes.

Isn't that what I said?

DOS 05-08-19 01:45 PM


Originally Posted by ThermionicScott (Post 20920186)
Isn't that what I said?

Yes, I was just noting that I drew same conclusion.

ThermionicScott 05-08-19 02:00 PM


Originally Posted by DOS (Post 20920216)
Yes, I was just noting that I drew same conclusion.

Ahh, gotcha. :thumb:

TigerM 05-08-19 07:25 PM


Originally Posted by DOS (Post 20920154)
I too just assumed OP meant tires with tubes.

That's exactly what I meant. Sorry about the confusion.

Psimet2001 05-08-19 07:26 PM

This is still going? Wasn't this a first time thread starter? Is this spam or trolling?

TigerM 05-08-19 07:28 PM

Thanks all for the input. Appreciate it.

I'll go tubeless with a 700x25c Continental GP5000 TL.


Safe riding everyone! Cheers.

woodcraft 05-08-19 11:45 PM


Originally Posted by alcjphil (Post 20919981)
It does:
https://www.probikekit.ca/bicycle-ty.../10780306.html
Tubular tires are sold as 28", 700c, or using ERTO sizing


You win- I see Sheldon referring to "700c tubular", so I'll have to get over it, or peeve in silence.


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