Chinertown

Chinese Carbon Road Bikes => Road Bike Frames, Wheels & Components => Topic started by: jeanpierrebalsac on July 26, 2026, 08:47:39 AM

Title: Community driven bicyle tire width measurements - rubbersideup.cc
Post by: jeanpierrebalsac on July 26, 2026, 08:47:39 AM

Hello everyone,

As more and more discussions, podcasts and Youtube video's have been revolving around tire width, I decided to create a community driven bicycle tire width measurements database: rubbersideup.cc (http://rubbersideup.cc) . A bit like geometry geeks, but then for measured tire widths. So then you can have a good estimation of whether your tire/ internal rim width combination will fall in the 105% rule, or would even clear your frame.

All added home-measurements can be submitted and would be very well appreciated. Also potential improvements can be posted here.

Cheers

Title: Re: Community driven bicyle tire width measurements - rubbersideup.cc
Post by: Serge_K on July 26, 2026, 10:26:55 AM

Great resource I used again last week. Thank you for putting that together.
To the extent you can, there should be a nuance between the GP5000 and the ALL SEASON version. Idk whether both tyres expand the same on a given rim; they are quite different.

Reply as per below: Ah, so the option is there already, great. People havent been populating these fields then i guess (Conti gp5000 35C).

Title: Re: Community driven bicyle tire width measurements - rubbersideup.cc
Post by: jeanpierrebalsac on July 27, 2026, 06:44:28 AM

Thank you for the endorsement.

Currently when clicking the model 'Grand Prix 5000', there are versions 'STR', 'TT TR' and 'All Season TR'. So you can make a distinction between how the GP5000 expands in general, but also how the All Season TR expands more specifically. How would you suggest we change this?

Title: Re: Community driven bicyle tire width measurements - rubbersideup.cc
Post by: damned on July 27, 2026, 08:24:51 AM

such a great tool ! just added mine - I struggled to get a measure for this setup so I hope it'll help people : )

Title: Re: Community driven bicyle tire width measurements - rubbersideup.cc
Post by: lorenzo on July 27, 2026, 01:52:22 PM

Thank you for the tool! I’ve just uploaded my measurements.

I think you should also post it on Reddit (maybe in r/Velo) to get more data from fellow gear geeks riders  ;D

Title: Re: Community driven bicyle tire width measurements - rubbersideup.cc
Post by: jeanpierrebalsac on July 28, 2026, 02:11:57 AM

Thanks for the suggestion. I'm not much of a redditter, so I created an account and tried to upload a new subject the r/Velo, but it got blocked by the moderators. Any tips on how to get it through?

Title: Re: Community driven bicyle tire width measurements - rubbersideup.cc
Post by: jeanpierrebalsac on August 04, 2026, 04:21:44 AM

Reddit moderators say that cannot allow such sites/apps.

And: Added ranges to the explore page:

Title: Re: Community driven bicyle tire width measurements - rubbersideup.cc
Post by: jeanpierrebalsac on September 10, 2026, 01:15:17 PM

Hi all,

I have added a tool that estimates your tire width based on nominal width and internal rim width.

It's under the /estimate tab.

Grtz