Light loads, tall trailers Household furniture and home decoration products fill a trailer long before they reach the weight limit, which means the tractor is working against wind resistance rather than mass. The 550PS WP13.550E501 and the 12JSDX240TA-QH50 overdrive top gear on this X5000 6X4 are what keep a high cube trailer at cruise speed on a motorway. The chassis is the SX42584V324 with a 3200 + 1400 mm wheelbase, HANDE MAN 9.5 T front axle, HANDE 16 T MAN double