| English term or phrase: high X-bone frame | At the BMW S300’s heart lies what BMW has termed a 'high X-bone frame'.
While the bodyshell is in effect a monocoque, what sets it apart is the manner in which the frame rails and centre tunnel combine to form an exceptionally rigid body-chassis. The 'X' element of the high X-bone frame refers to a notably deep centre tunnel, box-shaped in cross section to offer good resistance to torsional loads, and a pair of 'legs' at either end running diagonally. Those at the front connect directly with the front longitudinal frame rails to cradle the rear of the engine; those at the rear abut the rear chassis frame rails. |
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The translation workplace 
peer agreement (net): +3
