Author Topic: Community driven bicyle tire width measurements - rubbersideup.cc  (Read 1691 times)

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 . 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

Serge_K

Re: Community driven bicyle tire width measurements - rubbersideup.cc
« Reply #1 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).
« Last Edit: July 27, 2026, 08:47:27 AM by Serge_K »

Re: Community driven bicyle tire width measurements - rubbersideup.cc
« Reply #2 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?

damned

Re: Community driven bicyle tire width measurements - rubbersideup.cc
« Reply #3 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 : )

lorenzo

Re: Community driven bicyle tire width measurements - rubbersideup.cc
« Reply #4 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

Re: Community driven bicyle tire width measurements - rubbersideup.cc
« Reply #5 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?

Re: Community driven bicyle tire width measurements - rubbersideup.cc
« Reply #6 on: August 04, 2026, 04:21:44 AM »
Reddit moderators say that cannot allow such sites/apps.

And: Added ranges to the explore page:

Re: Community driven bicyle tire width measurements - rubbersideup.cc
« Reply #7 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