Perfect for deep muddy terrain the dirty dan is the ideal choice for real dirt riding the huge tread just bites into the soft ground making for a better ride the massive spaces between the toothy tread provide the necessary self cleaning and braking traction schwalbe dirt dan 26in evo tyre features size 26 x 200 compound pacestar folding yes puncture protection evolution tl ready about the schwalbe brand for over 70 years schwalbe have dominated the two wheeled tyre industry in