Go Back  Bike Forums > Bike Forums > Road Cycling
Reload this Page >

“30mm wide rim”...what is widest tire?

Search
Notices
Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

“30mm wide rim”...what is widest tire?

Thread Tools
 
Search this Thread
 
Old 04-20-20, 05:54 AM
  #1  
Senior Member
Thread Starter
 
Join Date: Jun 2011
Posts: 265
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 3307 Post(s)
Liked 78 Times in 65 Posts
“30mm wide rim”...what is widest tire?

The seller show me the spec of 30mm as the outer dimension of the rim.
If you have to guess the inner rim width...what would it be?

I am trying to figure out what if I can do a 32mm tires.

I am in China, trying to buy a entry level roadbike. here, Theres no road bike with wide tires with unless you spend big bucks on a Trek or something. everything seems to come with 23mm wide tires.

theres plenty of frame clearance for 32mm tires.

rim double wall
outer rim dimension : 30mm
tires: Kenda k191 700x23


Last edited by mtb_addict; 04-21-20 at 12:42 AM.
mtb_addict is offline  
Old 04-20-20, 06:55 AM
  #2  
Senior Member
 
Join Date: Oct 2018
Location: VA
Posts: 1,437

Bikes: SuperSix Evo | Revolt

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 733 Post(s)
Liked 815 Times in 414 Posts
Could be 19mm, up to 23mm, but even at 19mm, a 32mm tire will probably measure a lil bigger. If the frame will fit it, should be a good setup. I recently switched to 32mm GP5000s and they're great.
Rides4Beer is offline  
Likes For Rides4Beer:
Old 04-20-20, 07:51 AM
  #3  
Pointy Helmet Tribe
 
guadzilla's Avatar
 
Join Date: Feb 2009
Location: Offthebackistan
Posts: 4,338

Bikes: R5, Allez Sprint, Shiv

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 519 Post(s)
Liked 627 Times in 295 Posts
[QUOTE=mtb_addict;21428545]The seller show me the spec of 30mm as the outer width of the rim.
If you have to guess the inner rim width...what would it be?
/QUOTE]

I'd guess 21 or 23mm. Most likely 21.
guadzilla is offline  
Old 04-20-20, 07:57 AM
  #4  
Senior Member
 
noodle soup's Avatar
 
Join Date: Nov 2015
Posts: 8,922
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 4717 Post(s)
Liked 1,882 Times in 998 Posts
[QUOTE=guadzilla;21428714]
Originally Posted by mtb_addict
The seller show me the spec of 30mm as the outer width of the rim.
If you have to guess the inner rim width...what would it be?
/QUOTE]

I'd guess 21 or 23mm. Most likely 21.
Light Bicycle 30mm wide hoops have a 23mm internal measurement.

noodle soup is offline  
Likes For noodle soup:
Old 04-20-20, 12:29 PM
  #5  
Senior Member
 
trailangel's Avatar
 
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,848

Bikes: Schwinn Varsity

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1931 Post(s)
Liked 742 Times in 422 Posts
Alloy rim would be 25mm internal with 30mm external.
Carbon rim might be different.....21 or 23mm internal for 30mm external

Largest width tire for 25mm internal would be about 3 inches.
Largest width tire for 23mm internal would be about 2.5 inches.
trailangel is offline  
Old 04-20-20, 12:51 PM
  #6  
Pointy Helmet Tribe
 
guadzilla's Avatar
 
Join Date: Feb 2009
Location: Offthebackistan
Posts: 4,338

Bikes: R5, Allez Sprint, Shiv

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 519 Post(s)
Liked 627 Times in 295 Posts
Originally Posted by noodle soup
]Light Bicycle 30mm wide hoops have a 23mm internal measurement.
Yeah, that and my Rovals is what i was going by (the Roval CL50s are 30mm wide as well, with a 21mm ID).

I reckon if a company is woke enough to go with modern wide 28-30mm OD rims, they are probaby reasonably wide on the ID as well.
guadzilla is offline  
Old 04-20-20, 07:11 PM
  #7  
Senior Member
Thread Starter
 
Join Date: Jun 2011
Posts: 265
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 3307 Post(s)
Liked 78 Times in 65 Posts
[QUOTE=noodle soup;21428727]
Originally Posted by guadzilla
Light Bicycle 30mm wide hoops have a 23mm internal measurement.
Hmm...for sure the rim comes with 23mm tires...so theres no way it can have 30mm outer width.

I guess the 30mm spec I got must be wrong. Maybe 30mm is the height of the rim, instead. I edited post 1 to reflect this.

Last edited by mtb_addict; 04-20-20 at 07:20 PM.
mtb_addict is offline  
Old 04-20-20, 11:25 PM
  #8  
Pointy Helmet Tribe
 
guadzilla's Avatar
 
Join Date: Feb 2009
Location: Offthebackistan
Posts: 4,338

Bikes: R5, Allez Sprint, Shiv

Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 519 Post(s)
Liked 627 Times in 295 Posts
Originally Posted by mtb_addict
Hmm...for sure the rim comes with 23mm tires...so theres no way it can have 30mm outer width.
I guess the 30mm spec I got must be wrong. Maybe 30mm is the height of the rim, instead. I edited post 1 to reflect this.
Not necessarily. The width of the tire is determined by the inner diameter of the rim - if you look at the image posted by Noodle_Soup, it is the 23mm dimension. The 30mm would refer to the outer edge of the rim, which doesnt play a role in how the tire mounts or spreads out.

Eg, both my Rovals have a 21mm ID. One has a 28mm OD, one has a 30mm OD, but i can mount 23c tires on both of them quite easily.
guadzilla is offline  
Old 04-21-20, 08:00 AM
  #9  
Senior Member
 
noodle soup's Avatar
 
Join Date: Nov 2015
Posts: 8,922
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 4717 Post(s)
Liked 1,882 Times in 998 Posts
Originally Posted by mtb_addict
[

Hmm...for sure the rim comes with 23mm tires...so theres no way it can have 30mm outer width.

I guess the 30mm spec I got must be wrong. Maybe 30mm is the height of the rim, instead. I edited post 1 to reflect this.
Originally Posted by noodle soup
]Light Bicycle 30mm wide hoops have a 23mm internal measurement.

This is the cross section of a Light Bicycle AR56 rim. It's 56mm deep , 30mm wide, and 23mm internal width.

noodle soup is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.