27.5 tire on 26 rim

Schulze · Nov 8, 2016

Yeah, this will totally be fine. Be sure to get good video of the attempts.

ashas · Nov 8, 2016

twd953 said:
Ok, that's not a great idea. The guy is almost surely running a 26" fork. Some 26" forks will work with some 27.5 wheels/tires but not all. And just because you can stuff the larger wheel and tire into the fork and it clears the fork brace doesn't mean it's safe to use.

If you put a wheel/tire that is larger than the fork was designed for, the tire can hit the bottom of the fork crown when the fork bottoms out, causing the front wheel to come to an immediate stop, with a nasty crash nearly guaranteed.

I'm not trying to be mean, or belittle you in any way, but it doesn't sound like you, or the potential buyer are qualified to make that determination.

Best thing you can do at this point is to tell the guy, sorry, this tire won't work on 26".

he tried and its not working, just as I thought.

AndrwSwitch · Nov 8, 2016

Did the tire even mount?

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J.B. Weld · Nov 8, 2016

This situation came up at the shop a lot-

Standard 26 x 1 3/8 rims are 590mm erd and Schwinn used an S-6 size that was 597mm. You could get the 590's on a 597mm rim and they are ridable but impossible to seat correctly, however mounting 597's on a 590 rim is not possible.

jfudge02 · Nov 8, 2016

Just cut 2" off of the tire. Then use some stans to seal it back together. Easy peezy.

ashas · Nov 8, 2016

AndrwSwitch said:
Did the tire even mount?

Sent from my E5803 using Tapatalk

haven't tried so far.
after thinking about facts and discussion here, I guess it will hold, stationary. but any leaning and cornering it will not hold, pretty sure.

ashas · Nov 8, 2016

J.B. Weld said:
This situation came up at the shop a lot-

Standard 26 x 1 3/8 rims are 590mm erd and Schwinn used an S-6 size that was 597mm. You could get the 590's on a 597mm rim and they are ridable but impossible to seat correctly, however mounting 597's on a 590 rim is not possible.

interesting. also, logical - isn't it?

ashas · Nov 8, 2016

jfudge02 said:
Just cut 2" off of the tire. Then use some stans to seal it back together. Easy peezy.

you forgot to use gaffa tape. gaffa solves EEEEEVERYTHIIIIING....

J.B. Weld · Nov 8, 2016

ashas said:
interesting. also, logical - isn't it?

Logical that a tire 7mm too big won't mount on a rim but one that's 25mm too large might??

ashas said:
after thinking about facts and discussion here, I guess it will hold, stationary.

ashas · Nov 8, 2016

J.B. Weld said:
Logical that a tire 7mm too big won't mount on a rim but one that's 25mm too large might??

12,5 in radius. but yes - won't hold.

Prophet Julio · Nov 8, 2016

I want to see the YouTube video of the effort.

madstace · Nov 8, 2016

Prophet Julio said:
You could use like 20 layers of rim tape, but don't inflate the tire over 4 psi or try to turn.

Don't listen to the naysayers, with the above solution this could totally work. The trick with the rim tape would be to apply it over both the rim and the tyre, thus taking the bead and sidewall fit out of the equation. Ok it might make the tyre grip questionable, be a real PITA to change the tyre, not to mention ride like absolute ****. But it would work </jk>

Prophet Julio · Nov 9, 2016

Fill the tire with foam! That might help as well.

233946 · Nov 9, 2016

Just get a fatbike tube for a 26" rim, mount it, pull the tire over that and then inflate. The tube will take up the space between the rim and tire. Please take video of this and your friend trying to ride the bike if it makes it that far. It will likely make fail of the month over at pinkbike.

27.5 tire on 26 rim

Schulze

ashas

AndrwSwitch

J.B. Weld

jfudge02

ashas

ashas

ashas

J.B. Weld

ashas

Prophet Julio

madstace

Prophet Julio

233946

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