Tread softly because you tread on my dreams. Studdable tires are manufactured with molded holes on the rubber tire tread. The front fenders enclosed the running surface of the tire tread. Bar angle is a tyre tread measurement. Manufacturers produce bicycle tires with a wide variety of tread patterns to suit different needs. Lugs are that portion of the tread design that contacts the road surface. In 1952, the company ventured into the manufacture of tread rubber. The image on the right illustrates the space efficiency gained by an alternating tread stair. The advantage of alternating tread stairs is that people can descend face forward. So we tread a pretty thin line. They were characterized by a low, rearward seating position, fixed-width tread, and low ground clearance. Each step is composed of tread and riser. They are the stringer, the tread and the riser. Others have reflective material embedded in the tread.