The GoJak Model 4500 Super-Slick was developed for the race car industry. You can effortlessly lift and move cars with tires as wide as 50cm (20 inches) and up to 91cm (36 inches) tall. The GoJak Model 4500 will handle wheel weights of 500Kg (1,125 lbs), up to 2000Kg with four units ( 4,500 lbs with four units). Twin rollers on each axle guide the tire smoothly up and over the axle support bar to lift wider tires. The GoJak Model 4500 auto jack / auto dolly unit uses a bi-directional linear ratchet for the jack portion and has a 5-degree offset pedal angle for additional foot-to-tire clearance..