X3000 6x4 Dump Truck for Highway Sand and Gravel Runs, Air Suspension Not every tipper works in a pit. This X3000 6x4 is set up for the road leg instead: air suspension on the rear axle to protect the load and the pavement, an aluminium 400 litre tank for long round trips, and a body sized to stay inside axle load limits rather than fill the bowl to the top. Rated payload is 30 ton, which suits sand, gravel and aggregate on public roads. Under the cab is the 430 horsepower
