Newer tire on an older rim

[shankldu]

So the rim in question is prob a 80s araya the tire is newer bontrager 23 mm and it just wont go , layed in the sun , using motor cycle steel levers etc ,aint gona happen ideas?

[Tandem Rider]

An 80's Araya rim could be 27", not 700c. If that's the case, you are right, it ain't gonna happen. You could try comparing it to known rim side by side to get definitive answer if the writing is illegible or the rim tag is MIA.

[bikinchris]

The rim probably has a marking on it. If it says 630 anywhere, a 622mm bead on a new tire will not fit.

[Mark McM]

Originally Posted by bikinchris

The rim probably has a marking on it. If it says 634 anywhere, a 622mm bead on a new tire will not fit.

I think you mean the rim might be marked 630 which is the bead diameter for a 27" tire.

Also, you can just measure the rim diameter. a 700c rim will have an outer diameter of roughly 630mm (622mm bead diameter, plus an additional 4mm of sidewall on either side), whereas a 27" rim will have an outer diameter of about 638mm.

[bikinchris]

Originally Posted by Mark McM

I think you mean the rim might be marked 630 which is the bead diameter for a 27" tire.

Also, you can just measure the rim diameter. a 700c rim will have an outer diameter of roughly 630mm (622mm bead diameter, plus an additional 4mm of sidewall on either side), whereas a 27" rim will have an outer diameter of about 638mm.

Yes, my brain fart. Corrected it.

[peanutgallery]

buy new wheels, that thing is 30 or more years old. problem solved

riding a bike should not be like an episode of american pickers

[pbarry]

Originally Posted by peanutgallery

buy new wheels, that thing is 30 or more years old. problem solved

riding a bike should not be like an episode of american pickers

No one told me this.

[jamesdak]

Nothing wrong with 30year old bikes and 27" wheels. Heck this one is 47 years old...

[peanutgallery]

Like I said, American Pickers...don't let it happen to you

[shankldu]

How about 29er tires on the araya rim ?? Fingers crossed as the brake have huge clearance and i have aset layeing around.

[HTupolev]

Originally Posted by shankldu

How about 29er tires on the araya rim ?

"29er" is mountain bike marketing speak for "700c."

Bead seat diameter must match exactly between tire and rim. If you have 700c rims, get 700c tires. If you have 27" rims, get 27" tires.

[martl]

Originally Posted by peanutgallery

buy new wheels, that thing is 30 or more years old. problem solved

riding a bike should not be like an episode of american pickers

i'd love to debate this with you in detail, but i got to put a 2019 tire on my 1930ies Automoto Tour de France.