They might be the Krylion 2 endurance ones now . https://www.bicyclerollingresistance.com/road-bike-reviews/michelin-krylion-2-2017
Only found out because planet x have them at £18 a pop.
What might be?
Pro 4 Endurance are a different tyre.
I'm only repeating what I've seen elsewhere, but apparently the Krylion 2 endurance are the same tyre as the Pro4 endurance. And I couldn't tell difference when I had them in hand. Not that it matters anyway, as the Krylion are only in a 25.
@hippy started
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They might be the Krylion 2 endurance ones now . https://www.bicyclerollingresistance.com/road-bike-reviews/michelin-krylion-2-2017
Only found out because planet x have them at £18 a pop.