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forum
25mm rim with a 25mm tyre clearances
Hi all.
I'm in the market for some new wheels and with the trend for wider being better I'm doing some research.
I have a cannondale supersix evo 2015 which has really narrow chainstays at the back. I have 25mm conti gp4000s (actually measuring just over 26 with a verneir) on a 22.4mm (rs81 c24 rim). I have had no issues with about 3mm of clearance either side and about 3000 miles miles including a mountain trip on the frame.
If i went to a 25mm rim with a 25mm tyre would the tyre come up wider than the 26mm I'm measuring at the moment?
If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.
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2 comments
This page will help;
https://www.schwalbe.com/gb/reifenmasse.html
It is the rims internal width that matters as thus dictates how much the tyre will "balloon".
For reference I had a h plus archetype 170mm internal. A 25mm Schwalbe measures 26mm with a vernier.
Same tyre on Kinlin xr22t 19mm internal is 27.6mm.
Finally, a 25mm GP4000 on Pacent Forza 20mm internal rim is 27.85mm.
Hope that helps