If your everyday work requires some serious tools of the trade, or you’re serious about off-road play, you need to consider whether your vehicle is exceeding its GVM (Gross Vehicle Mass). The stock suspension components of many modern 4WDs are a compromise designed for the comfort expected by the mass market. If your vehicle regularly carries heavy loads, or is fitted with accessories such as bull bars, long range tanks, winches, side steps, recovery kit or similar, it potentially exceeds its GVM, which is illegal and can be hazardous.