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how wide tires can one put on a 622x15C rim?



 
 
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  #1  
Old October 2nd 18, 06:10 PM posted to rec.bicycles.tech
Emanuel Berg[_2_]
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Default how wide tires can one put on a 622x15C rim?

How wide tires can one put on a 622x15C rim?
Currently those on are the accursed 23-622
or 700x23C.

TIA

--
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http://user.it.uu.se/~embe8573
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  #2  
Old October 2nd 18, 10:03 PM posted to rec.bicycles.tech
Andre Jute[_2_]
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Default how wide tires can one put on a 622x15C rim?

On Tuesday, October 2, 2018 at 6:10:14 PM UTC+1, Emanuel Berg wrote:
How wide tires can one put on a 622x15C rim?
Currently those on are the accursed 23-622
or 700x23C.


The ERTRO max is 2.5x the rim width over the bead retainer ridges, that is, not the outside of rim. So, supposing your rims are actually 15mm on the inside, you could theoretically fit 37mm tyres. If your rim manufacturer misleadingly tells you the outside measure of the rim, you should measure the inside width yourself and proceed from there.

Here's a worked calculation for a true 29er:
1. 1in + 736.6mm (we use a period, a full stop, for the decimal separator)
2. Rim diameter 622mm
3. (737 - 622)mm/2 = 57.5mm tyre width
4. Most desirable tyre for application is Schwalbe Big Apple
5. Schwalbe offers the Big Apple in 60mm, slightly larger than 29er requires, and the bike has clearances for such a big tyre plus the associated mudguards
6. Minimum inside rim width is 60mm/2.5 = 24mm
7. 24mm and 25mm inside measurement 622mm diameter rims are available
8. It may be better to use a rim width factor of 2, so 60mm/2 s = 30mm
9. 30mm inside width rims are available, built for monocycles

Andre Jute
So many choices. I blame Adam Smith.
  #3  
Old October 2nd 18, 10:54 PM posted to rec.bicycles.tech
[email protected]
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Default how wide tires can one put on a 622x15C rim?

According to Schwalb, you can go from a 23 to a 32 tire in a 15C rim.
  #4  
Old October 4th 18, 05:20 PM posted to rec.bicycles.tech
Emanuel Berg[_2_]
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Default how wide tires can one put on a 622x15C rim?

Andre Jute wrote:

The ERTRO max is 2.5x the rim width over the
bead retainer ridges, that is, not the
outside of rim. So, supposing your rims are
actually 15mm on the inside, you could
theoretically fit 37mm tyres.


Interesting. No, 32 is perfect, I think!

--
underground experts united
http://user.it.uu.se/~embe8573
  #5  
Old October 4th 18, 06:13 PM posted to rec.bicycles.tech
Sir Ridesalot
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Default how wide tires can one put on a 622x15C rim?

On Thursday, October 4, 2018 at 12:20:43 PM UTC-4, Emanuel Berg wrote:
Andre Jute wrote:

The ERTRO max is 2.5x the rim width over the
bead retainer ridges, that is, not the
outside of rim. So, supposing your rims are
actually 15mm on the inside, you could
theoretically fit 37mm tyres.


Interesting. No, 32 is perfect, I think!

--
underground experts united
http://user.it.uu.se/~embe8573


Bear in mind that a very wide tire on a narrow rim can cause you to go down if you puncture in a turn. that's because the wheel with the punctured tire can slide out from under you even though the tire stays on the rim.

Cheers
  #6  
Old October 8th 18, 10:18 PM posted to rec.bicycles.tech
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Default how wide tires can one put on a 622x15C rim?

On Thursday, October 4, 2018 at 10:13:31 AM UTC-7, Sir Ridesalot wrote:
On Thursday, October 4, 2018 at 12:20:43 PM UTC-4, Emanuel Berg wrote:
Andre Jute wrote:

The ERTRO max is 2.5x the rim width over the
bead retainer ridges, that is, not the
outside of rim. So, supposing your rims are
actually 15mm on the inside, you could
theoretically fit 37mm tyres.


Interesting. No, 32 is perfect, I think!

--
underground experts united
http://user.it.uu.se/~embe8573


Bear in mind that a very wide tire on a narrow rim can cause you to go down if you puncture in a turn. that's because the wheel with the punctured tire can slide out from under you even though the tire stays on the rim.

Cheers


I forget the term for that but it can also occur if you use tubeless tires at too low a pressure.
  #7  
Old January 12th 19, 05:09 AM posted to rec.bicycles.tech
[email protected]
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Posts: 55
Default how wide tires can one put on a 622x15C rim?

On Tuesday, October 2, 2018 at 1:10:14 PM UTC-4, Emanuel Berg wrote:
How wide tires can one put on a 622x15C rim?
Currently those on are the accursed 23-622
or 700x23C.

TIA

--
underground experts united
http://user.it.uu.se/~embe8573


You can put any size you want on there. The only problem that could occur is if the sidewalls are very thick in which case there's no room for the tube to expand inside the rim hence holding the tire in place. Not likely for good-quality tires.
  #8  
Old January 12th 19, 05:30 AM posted to rec.bicycles.tech
John B. Slocomb
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Default how wide tires can one put on a 622x15C rim?

On Fri, 11 Jan 2019 21:09:03 -0800 (PST),
wrote:

On Tuesday, October 2, 2018 at 1:10:14 PM UTC-4, Emanuel Berg wrote:
How wide tires can one put on a 622x15C rim?
Currently those on are the accursed 23-622
or 700x23C.

TIA

--
underground experts united
http://user.it.uu.se/~embe8573

You can put any size you want on there. The only problem that could occur is if the sidewalls are very thick in which case there's no room for the tube to expand inside the rim hence holding the tire in place. Not likely for good-quality tires.


See https://www.sheldonbrown.com/tire-sizing.html
nearly the bottom of the page.
Says 23, 25, 28, 32mm

cheers,

John B.


 




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