The heavy-duty plug-in wheelcart is Hobie’s toughest Plug-in cart. This cart has a much higher capacity and tires with tread that is more rugged than other Hobie carts. The cart capacity far exceeds the weight of Hobie’s heaviest kayak products. Tire capacity lists as over 200 lbs per tire. These tires use an inner tube and standard rubber like tire with deep tread pattern.