i have just ordered a nice set of kenda super pocket bike tires (13x6.5-6) street tread, for my old style doodlebug because i am sick and tired of ripping knobbies off riding on the road.. but it never occured to me while i was placing the order that the new tires may require tubes. since i am using the stock one piece rims do i need to use tubes or not? i know the stock tires are tubeless but of course the website i ordered the new ones from makes no mention of whether or not tubes are required. if i can get away with not using tubes i would prefer that, or is it better to have tubes? i have no idea. any help? thanks.