The 40c version runs smoothly on tarmac. So the 43 shouldn't be much different.
Ok thats fine ill see to GKs then unless theres an alternative for bigger tyres
Yes they rolled nicely. As an extremely rough guess, maybe a couple mph slower for the same effort as a slick? Slower getting up to speed than a slick though, as expected.
@musa started
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The 40c version runs smoothly on tarmac. So the 43 shouldn't be much different.