19 inch tubes on 21 inch wheel?

[dumb person]

Just a quick question (not sure if i asked this before) has anyone experienced problems using 19 inch tire tubes inside 21 inch wheels?

[Special Coupe Frank]

Not ideal, but might do in a pinch.

What kind of driving do you do: slow and local, or sustained higher-speeds ?

[Dave72dt]

I wouldn't recommend it. MUCH more difficult to mount the tire and the probability of pinching the tube is high.

[spike]

that is like putting a size 8 shoe on a man with a size 10 foot....lol or it might do in a pinch...lol......not recomended

[ronn]

go for it! take the car up to 60mph for sustained speed and let us know how long it lasts.... )

[glenn in camino]

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Back in the mid 80s I had a lot of split tube flats on a 2 week long tour. I solved the problem by going to a motorcycle store and buying some 19" tubes. They worked fine.

[CarlG]

"Back in the day" (mid '50s) I used an 18" tube in a 600x20 tire on my AA to get me home (about 400 miles).

[dumb person]

Originally Posted by Special Coupe Frank

Not ideal, but might do in a pinch.

What kind of driving do you do: slow and local, or sustained higher-speeds ?

i was given them so i put them on. It was very hard to mount the tires without pinching them, took all day. Mostly low speed driving but i did get it up to 45 once for around 30 seconds (yes that is slow for a model A but this one weights too much)