• ^^that rim width / tyre width chart is ridiculously conservative.

    I ran my 23s today (on 19mm ext rims) at 85f and 90r (I seem to be about 65kg this week). Springy yet predictable ride over Surrey's worst, dealing fine with gravel on high speed corners, twisty descents that were a little greasy in places, no wheelspin on short ~18% sections, and no snakebite when I hit a fucking ridiculous (and cunningly disguised) pothole doing 38mph down Ranmore Common Rd towards Chapel Lane & Boxhill/Westhumble Station.

    I find Michelin Pro 3 Races with latex tubes have a little more 'chatter' than Vred Tricomps w/Butyl if run at the same pressures, so go 5psi lower all round.

    Basically it was awesome, so ner.

    Following up on this, I've come to the conclusion that for the same ride quality / 'feel' / characteristics, latex tubes need to be run 5psi softer than butyl ones with the same wheel+tyre setup (it could be ~5% less, but I can't say for sure, having only done this at 1 pressure setting, with a sample of 1 rider).

    I was slightly surprised by this. If anything, I expected it to be the opposite, with latex tubes giving a more supple ride at the higher pressure; but no.

    In the end, latex tubes seem a bit like disc wheels - not really worth the expense, unless you're chasing marginal gains. They sounded nice (like disc wheels), but beyond that, I couldn't tell any difference in handling, or puncture resistance, or ease of fitting, or weight/rotational mass, or rolling resistance beyond what you experience whilst walking the bike along.

    I'm back on butyl
    Because change has been futile
    It's not the new style*.

    *Sorry, Ad-Rock, I tried.

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