donrhummy

Does a 700x20 tire fit a 622 x 14 rim?

Where do I find this info?

(And will it be harder/easier to get a tube into a 700x25 tire on that rim?)

TheKillerPenguin

uh.....

ElJamoquio

No.

barba

700c is 622mm.

barba

https://sheldonbrown.com/rim-sizing.html

toThinkistoBe

Yes

edit: I'm too slow!

donrhummy

Thanks for the link, but I can't find the answer there. I know 700c is 622, but what about the 14 part? Is that the rim's inner width? outer width? And how does that correlate to the tire width? I don't see anywhere in that link where it says that a 14 width rim can fit an "X"-width tire.

toThinkistoBe

Look at the very bottom of the link I posted.

donrhummy

Why? Are you sure you really know what you're talking about? You DO know that a 700c tire is 622mm diameter, right? So the 700 to 622 is at least a PERFECT fit. It's the 20 to 14 I'm not certain about.

donrhummy

Thanks, but there's no 14 mentioned there. All it says is a 13 is too small for a 20 and a 15 fits a 20, so how do I know a 14 fits? And why is my wheel a 14 when it's not even on that chart? Is it non-standard, or is it not really a 14?

barba

Where are you getting the 14 part from? Is it on the rim or a spec sheet. I am guessing it is the inner rim width, as I have never heard of a tire with a measurment of "14".

edit: you could always just measure the inner rim width if you want verification of that 14 guess. I am betting you will be fine one way or the other.

toThinkistoBe

On the contrary, it says a 13 would fit a 20. Perhaps your rim is measured from the exterior. Even if it isn't, based on that chart I would say a 14/20 would be fine, although I'm sure someone more knowledgable will come around.

donrhummy

It says:

"ETRTO: 622x14" on the wheel itself.

donrhummy

Whoops, yep of course you're correct. I was reading it as "the 'X' means NOT compatible." I should have gone by color. LOL.

Still, 14 isn't mentioned which is weird -- I guess it's non-standard. But yes, judging by that chart, it appears 20 would be the minimum "ok" size for a 14.

Thanks!

barba

I am sticking with inner rim width. The 622 is the ISO bead seat diameter. It seems like that and inner rim width would be the two most useful measures for picking a tire.

alanbikehouston

Can you mount a tire on a rim? With enough force, you would be amazed at the wide range of tires that can be mounted on a given rim.

"Can I get the tire on the rim" is a very a different question than "what is the best width of tire" for a given rim. One "sizing" problem is that most tires sold in the USA are mismarked. Tires marked as a 25mm width usually measure closer to a 23mm width. Tires marked 23mm in width usually measure about 21mm or 22 mm in width.

So, you need to carefully measure the tire in question when it is fully inflated to maximum PSI to find out its true width. Its true width is most likely 1mm or 2mm less than what is marked on the sidewall. Then, you need to measure the interior distance from the left wall of the rim to the right wall of the rim. Make your decision based on TRUE measurements, not the advertised measurement.

If you are uncertain about the match between a given tire and a given rim, look at the information provided on the company website by the folks who made the rim.

If a given rim is designed for tires that are a TRUE 25mm in width, tires that measure between a "real" 23mm and a "real" 28mm should fit well. But, if a rim is designed for a 25mm tire, a tire that is a "real" 21mm will not be an ideal fit, and the tire will not meet its optimum cornering and handling performance. The fact that you can mount a 21mm tire on that rim does not mean doing so is a a great idea.

operator

You'd also be amazed when the rim explodes.

Little Darwin

Just to confirm that you could be correct...

Elsewhere on Sheldon's site he says that the tire width should be between 1.45 and 2.0 times the inner width. So since 13 * 1.45 is just under 19 and 13 * 2.0 is 26, you should be able to handle tires from 19-26 mm.

ElJamoquio

I stand corrected. I thought it was way too narrow.

ElJamoquio

I didn't look up whether the 700c was 622; I didn't care because I thought the widths were too far off, as well.

Actually, I'd still be kinda nervous about it; but if Sheldon says it's ok...

spunky

My Elan's are 622 x 14 wheels and I recently mounted a set of Veloflex Corsas on them......with extreme difficulty. The tires are listed as as 700(622)x 20's, but the instructions say to only mount them on 622 x 13 rims. I've heard that the Velos tend to be tricky so I'm not sure if it's the tires or the rims that are the problem. God forbid I ever get a flat on the road and have to change them. I might try them on my Campy wheels which are 622 x 13 and see if they're any easier.

donrhummy

Just mounted 700c x 20 tires (Hutchinson) on the rims and they went on fine. A tad harder than putting on 700c x 25, but not because of the rim-to-tire size, simply because there's less room to fit the tube into the tire. Getting it on the rim was basically the same. Of course, now I have to ride on it to be certain...