Answered A question about Rim Width

[Beekeeper]

Trying to work out the possible widths of tyre I could use. Currently have 2.6 Nobby Nic.

My rim specifications are as follows..

CUBE EX30, 32H, Disc, Tubeless Ready

What do those numbers mean?

 

[Zimmerframe]

Oh hell, you need to re title this thread.... ?

 

[GrahamPaul]

You should have some other numbers on that rim. Something like 32-622 (for a 29" wheel with a 32mm inside bead) or 32-584 for a 27 rim. (Can't remember is that's the right one for 27.5 rims, but it's the width that's important for you).

Here's a useful chart - just make sure you look at the mountain bike section...

Edit: Just realised that you have quoted those numbers off the Cube website. Both wheel sizes are available and so they haven't quoted the full rim information. It's almost certain that the 32H refers to the rim width.

 

[Zimmerframe]

but it's the width that's important for you

This thread just goes from bad to worse...

 

[GrahamPaul]

This thread just goes from bad to worse...

I've always been really passionate about my rim...

 

[Doomanic]

32H could be number of spoke holes.

 

[GrahamPaul]

32H could be number of spoke holes.

Completely agree. Must wash out my eyeballs.

 

[Beekeeper]

32H could be number of spoke holes.

Thanks,
So presumably the 30 is the internal width?
If this is the case then I assume I can use any tyre from 2.2 to 2.7 according to this chart....

Tire Size Chart For Bicycle Rim

 

[Doomanic]

30 could be the internal or the external width. Do you have a vernier?

 

[JimBo]

Thanks,
So presumably the 30 is the internal width?
If this is the case then I assume I can use any tyre from 2.2 to 2.7 according to this chart....

Tire Size Chart For Bicycle Rim

Those are preferred width matches. A friend of mine rides 2.8" tires on 19c rims - he sacrificed "cornering stability" for better cushioning.

Here's a graphic to illustrate:

 

[Beekeeper]

30 could be the internal or the external width. Do you have a vernier?

I’ll acquire one and measure it

 

[GrahamPaul]

Thanks,
So presumably the 30 is the internal width?
If this is the case then I assume I can use any tyre from 2.2 to 2.7 according to this chart....

Tire Size Chart For Bicycle Rim

And Schwalbe reckon a 30mm rim is good for 2.4 to 3.0...

 

[GrahamPaul]

I’ll acquire one and measure it

It should be written on the wheel rim. Cube are a German company. I can't imagine that they would send out their bikes without the rims having the required ETRTO sizing on them. They wouldn't be able to sleep at night.

 

[Zimmerframe]

I’ll acquire one and measure it

I so want to see the video of @Beekeeper at the pharmacy explaining that he wants to buy the tool to measure his rim width .. unless they can help ?

 

[Doomanic]

 

[Zimmerframe]

Trying to work out the possible widths of tyre I could use. Currently have 2.6 Nobby Nic.

My rim specifications are as follows..

CUBE EX30, 32H, Disc, Tubeless Ready

What do those numbers mean?

OK .. I've read the post now ..

I think you can use any width. But I wouldn't risk putting a tyre on which is skinnier than your rim as you're more likely to scuff your rim or burp the tyre off.

The size of the rim doesn't limit what size of tyre you can use.

The size of the rim will influence how the tyre of whatever size you choose will perform.

So the real question is, what size tyre do you want and why.

Which leads to the proper question, of what size tyre would actually be the right size tyre for you taking into account your rim width.

I prefer all my other answers though.

 

[Nicho]

I so want to see the video of @Beekeeper at the pharmacy explaining that he wants to buy the tool to measure his rim width .. unless they can help ?

He should make sure he goes to a reliable dealer, otherwise he might get shafted, which would be a bit of a bummer!

 

[Beekeeper]

It should be written on the wheel rim. Cube are a German company. I can't imagine that they would send out their bikes without the rims having the required ETRTO sizing on them. They wouldn't be able to sleep at night.

Yes you are right it was written on the wheel rim but the writing was so small I had to magnify with phone to read it ?

 

[Beekeeper]

 

[GrahamPaul]

Great! That's the one. 29" wheel with 30mm internal rim width. Choose whatever you want, the world is your oyster!

 

[GrahamPaul]

Why couldn't this video have been put up yesterday?
Park Tool Understanding Tire Sizes | Tech Tuesday

 

[RickBullotta]

Tire & Rim Fit Chart