Abstract: An aggressive on/off-road pneumatic tire tread design for recreational vehicles which is highly durable, self cleaning, improves rolling resistance on paved roads, has excellent tread wear characteristics, and is relatively quiet on paved roads. The tread design includes a side wall tread portion including a scuff bar and the area between it and the ground contacting tread is further provided with raised emblems and distinctive markings which provide traction and reduce mud caking, The tire's tread includes a pair of parallel rows of opposing chevron shaped lugs, defining a zigzag channel therebetween, and an outer row of polyhedron shoulder lugs outboard of the chevron rows, the polyhedron lugs being three different sizes, a short, intermediate and long, sequentially arranged in sets of three with a short lug between each long and intermediate lug. Root risers in the lateral channel between each chevron shaped lug are provided to prevent stress crack running in the tread.

Abstract: A fully-adjustable boarding step for vehicles, and especially for off-road vehicles, wherein the cab or operator's position is high enough from the ground such that it is not easily accessible for boarding because of the clearance required between the ground and the frame of the vehicle. The device is a retractable, fully adjustable step adapted to fit a variety of the frames of presently used vehicles.