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  • Thanks!

    I'm about to try running 26" WTB Ranger 2.8s on 23mm WTB KOM i23 rims. The allegedly '2.8' tyres actually come up at 63mm (under 2.5), and the profile looks visually normal.

    The tyre/rim ratio is 2.8, much lower than the 3.3 ratio of the 2.2" tyre/17mm rim I ran for years on another 90's MTB with no issues...

  • Yeah, 'optimum' and what you actually need are as usual, very different things :-)

    I had 17mm rims with 2.3" tyres for years without any worries, although I was running the tyres at around 40psi, which is about double of what I currently do with wider rims, tubeless, fatter tyres etc

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