I have 700x37c tyres under 45mm guards and I wouldn't want to go much wider. 40c would fit but be a bit tight. Not sure how 700c vs. 650b factors into it though, although I'd imagine it doesn't make much difference when it comes to width.
@Colonel_of_Truth started
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I have 700x37c tyres under 45mm guards and I wouldn't want to go much wider. 40c would fit but be a bit tight. Not sure how 700c vs. 650b factors into it though, although I'd imagine it doesn't make much difference when it comes to width.