а если 40мм пихнуть, то зазоров под грязь и не останется
For gravel use, I find a lightly treaded tyre of around 40-42mm works best for most conditions, so it's a shame that the Triban is restricted to just 36mm. Reading the small print at the bottom of the website, it look as though this is more down to bigger tyres causing toe overlap at the front wheel (when you turn the front wheel at slow speeds while pedalling and the front of your shoe stops the wheel from turning). If you know what you are doing then it isn't an issue, and you should be able to squeeze a 40mm tyre into the front and rear of the bike.
Это с роуд.сс