Can I replace 37-622 tires with 28-622?

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iandusud
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Re: Can I replace 37-622 tires with 28-622?

Post by iandusud »

Mick F wrote: 9 Sep 2021, 6:19pm I have no doubt that you are correct, but my statement was for 27" rims.
They would take 1 1/4 tyres and 1 3/8.
Never come across a 27 x 1 3/8?
iandusud
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Re: Can I replace 37-622 tires with 28-622?

Post by iandusud »

Mick F wrote: 8 Sep 2021, 8:27pm
iandusud wrote: 8 Sep 2021, 8:00pm .......hence a 26 x 1 1/4 tyre requires a bigger diameter rim than a 26 x 1 3/8 tyre
No they don't.

............ or they didn't when I was on 26" rims in the 60s and 70s.
Had both those widths of tyres on the same bike over the years.

You said 26" rims not 27". And yes they do :D
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RickH
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Re: Can I replace 37-622 tires with 28-622?

Post by RickH »

The ISO sizing (622, 584, 559, etc) will give you something that will fit the rim but how big a tyre is once fitted can be very variable. I have 3 sets of tyres that I run on my 23mm wide (internally) rims. Schwalbe snow studs, Vittoria Voyager Hypers & WTB Nano 40s. All are marked 40-622 but they are different enough to see the difference purely by sight, no need to measure - the snow studs are smallest, the Hypers in the middle & the Nanos the biggest.

The Voyagers on Mrs H's bike are noticeably smaller as she has 19mm wide rims. If you assume the tyre cross section to approximate to being a circle, you've effectively lopped 4mm off the circumference of that circle.

In terms of performance, I don't seem to have lost any speed on the bike running the Voyagers compared to 28mn Continental Grand Prix 4 Seasons I had on the previous bike. But I have gained a lot of comfort on today's moonscape road surfaces due to being able to run 35 to 40 psi tyre pressures.
Former member of the Cult of the Polystyrene Head Carbuncle.
Jdsk
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Re: Can I replace 37-622 tires with 28-622?

Post by Jdsk »

Chris Jeggo wrote: 8 Sep 2021, 11:44pmOthers have answered the OP regarding tyre width suitability vs rim width. Replacing 37mm tyres with 28mm tyres will also reduce ground clearance by 9mm (3/8") which might matter when pedalling round corners or riding off-road (in a rut?).
RickH wrote: 9 Sep 2021, 8:11pm The ISO sizing (622, 584, 559, etc) will give you something that will fit the rim but how big a tyre is once fitted can be very variable. I have 3 sets of tyres that I run on my 23mm wide (internally) rims. Schwalbe snow studs, Vittoria Voyager Hypers & WTB Nano 40s. All are marked 40-622 but they are different enough to see the difference purely by sight, no need to measure - the snow studs are smallest, the Hypers in the middle & the Nanos the biggest.

The Voyagers on Mrs H's bike are noticeably smaller as she has 19mm wide rims. If you assume the tyre cross section to approximate to being a circle, you've effectively lopped 4mm off the circumference of that circle.
Schwalbe list external dimensions for their widest tyres. (In addition to rim diameter and rim width compatibility and estimated rolling circumference for all tyres.)
https://www.schwalbe.com/en/reifenmasse

Jonathan
sjs
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Re: Can I replace 37-622 tires with 28-622?

Post by sjs »


ARE YOU STILL THERE?
After replying very politely to the above and wading through what followed, I bet MsMellie now wishes they'd never posted in the first place.
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531colin
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Re: Can I replace 37-622 tires with 28-622?

Post by 531colin »

sjs wrote: 10 Sep 2021, 1:04pm

ARE YOU STILL THERE?
After replying very politely to the above and wading through what followed, I bet MsMellie now wishes they'd never posted in the first place.
How much time should I waste trying to help people who ask for help and then can't be bothered to return to their thread ?
No reply from the OP here viewtopic.php?f=1&t=147763&p=1637218#p1637218
Or here viewtopic.php?f=5&t=147685&p=1636012#p1636012
here the OP has returned to the thread, but made no answer to me viewtopic.php?f=5&t=147240&p=1635759#p1635759
Here they returned a couple of times, but left us hanging viewtopic.php?f=5&t=147648&p=1635320#p1635320
This one also leaves me feeling "why did I bother?" viewtopic.php?f=5&t=147644

Hopefully, you get the picture.

Getting back to the current thread, it started at 3.12 with a "very urgent matter"
By 5.36, there were 10 replies. Not from 10 different people, but 10 replies none the less. And no response from the OP.
Of those replies, one was a fairly harmless misapprehension of the width marking on the rim, but the other was the first shot in a trail of destruction which continued until about page 4.
If the OP had not returned to the thread, my plan was simple; I wouldn't bother to carry on contributing.
Jdsk
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Re: Can I replace 37-622 tires with 28-622?

Post by Jdsk »

The first post was at 7 Sep 2021, 3:12pm.
The OP responded at 7 Sep 2021, 6:36pm
Then at 7 Sep 2021, 6:46pm
Then at 8 Sep 2021, 7:39pm

This doesn't look anything like "fire and forget".

Jonathan
Last edited by Jdsk on 10 Sep 2021, 10:34pm, edited 1 time in total.
Vorpal
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Re: Can I replace 37-622 tires with 28-622?

Post by Vorpal »

531colin wrote: 10 Sep 2021, 6:08pm
How much time should I waste trying to help people who ask for help and then can't be bothered to return to their thread ?
No reply from the OP here viewtopic.php?f=1&t=147763&p=1637218#p1637218
Or here viewtopic.php?f=5&t=147685&p=1636012#p1636012
here the OP has returned to the thread, but made no answer to me viewtopic.php?f=5&t=147240&p=1635759#p1635759
Here they returned a couple of times, but left us hanging viewtopic.php?f=5&t=147648&p=1635320#p1635320
This one also leaves me feeling "why did I bother?" viewtopic.php?f=5&t=147644

Hopefully, you get the picture.

Getting back to the current thread, it started at 3.12 with a "very urgent matter"
By 5.36, there were 10 replies. Not from 10 different people, but 10 replies none the less. And no response from the OP.
Of those replies, one was a fairly harmless misapprehension of the width marking on the rim, but the other was the first shot in a trail of destruction which continued until about page 4.
If the OP had not returned to the thread, my plan was simple; I wouldn't bother to carry on contributing.
I'm afraid it's the nature of the internet :?: It's only been 3 days since this started. Some people don't even check their email that often, let alone a cycling forum.
Perhaps the OP got their answer & couldn't be bothered to follow all the sidetrack discussions? Or perhaps, having sorted it, are occupied with other things? Or perhaps, they'll be along at the weekend to say thanks? I don't think it's something to be bothered about, anyway.
“In some ways, it is easier to be a dissident, for then one is without responsibility.”
― Nelson Mandela, Long Walk to Freedom
Jamesh
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Re: Can I replace 37-622 tires with 28-622?

Post by Jamesh »

Jdsk wrote: 10 Sep 2021, 6:25pm The first post was at 7 Sep 2021, 3:12pm.
The OP responded at 7 Sep 2021, 6:36pm
Then at 7 Sep 2021, 6:46pm
Then at 8 Sep 2021, 7:39pm

This doesn't look anything like "fire and forget".


Jonathan
Maybe he has a life outside of a cycling forum?!
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531colin
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Re: Can I replace 37-622 tires with 28-622?

Post by 531colin »

Jdsk wrote: 10 Sep 2021, 6:25pm The first post was at 7 Sep 2021, 3:12pm.
The OP responded at 7 Sep 2021, 6:36pm
Then at 7 Sep 2021, 6:46pm
Then at 8 Sep 2021, 7:39pm

This doesn't look anything like "fire and forget".

Jonathan
Sorry, but I don't have the second sight.
To me, it looked just like a "fire and forget" right up until the OP got back.
And if it turned out to be a "fire and forget" then I wasn't going to argue with somebody insisting that all sorts of nonsense was actually fact.
Jdsk
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Re: Can I replace 37-622 tires with 28-622?

Post by Jdsk »

531colin wrote: 13 Sep 2021, 8:49amAnd if it turned out to be a "fire and forget" then I wasn't going to argue with somebody insisting that all sorts of nonsense was actually fact.
Yes, I can understand that.

: - )

Jonathan
the snail
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Re: Can I replace 37-622 tires with 28-622?

Post by the snail »

Mick F wrote: 9 Sep 2021, 6:47pm PS:
If you zoom into my photo, you can see that the tyres are much narrower than the 1 1/4 "standard" for 27" rims.
I wouldn't ride that bike, it's dangerously pixellated.
MikeF
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Re: Can I replace 37-622 tires with 28-622?

Post by MikeF »

531colin wrote: 9 Sep 2021, 10:13am

Go to the timber merchants, see what lengths timber is sold in.....its sold in Imperial lengths....but they call it something point something metres.
Indeed and other things as well. I had to buy covers and frames for "duct boxes"- the sort you see in pavements with BT/ Post Office Telephones etc on them. Different suppliers specified a slightly different measurement so I was unsure what I needed. It was only when I managed to let a supplier lend me one for a few hours that I realised they all were 3'x18"; each supplier had tried to metricate an imperial measurement and produced a different set of figures. :roll:
"It takes a genius to spot the obvious" - my old physics master.
I don't peddle bikes.
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kylecycler
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Re: Can I replace 37-622 tires with 28-622?

Post by kylecycler »

UK pledges to restore pounds and ounces as Brexit benefit

Boris Johnson’s government has promised it will legislate to allow British traders to sell their wares in pounds and ounces, rather than grammes and kilos, as it unveiled plans to seek a deregulatory dividend from Brexit.
https://www.ft.com/content/23569cd6-edc ... ffe5ac5f1c

Let's go back to prehistory - British roadies might soon be riding on 1" tyres (25 mm) or 1.1" (28 mm) - the new retro age beckons! :roll:
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531colin
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Re: Can I replace 37-622 tires with 28-622?

Post by 531colin »

kylecycler wrote: 17 Sep 2021, 4:54pm .........Let's go back to prehistory - British roadies might soon be riding on 1" tyres (25 mm) or 1.1" (28 mm) - the new retro age beckons! :roll:
I think 28mm will have been a translation of an inch and an eighth.
If you were designing a real, metric, decimal system, would you have 28 and 32mm tyres?
I don't think so, I think they are translations of inch and eighth and inch and a quarter.
In the same way, why in the name of reason do we have frame tubes measuring 26.8 and 28.6 mm? Or handlebars measuring 31.8mm?
answer....they are translations of sensible imperial fractional measurements.
Tubing, even titanium tubing, is still made in imperial (fractional) sizes, which we then translate into daft metric numbers.
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