ok time for new tires on the my tb250 the left rear has a flat anyways and i want better tires all around. i have been looking at 20inch kenda knarlys for rear and 21 inch kenda klaws for the front. any one with info on both of these tires. i know the klaws are a really good tire and i want the knarly cause of the deep treads. i ride in mainly sand and i want to put the smaller tires on cause i got a 13tooth sprocket and it took to much low wnd power away. what do you think? thanks