I've never heard of an "off-road" suspension option. The only thing I can think of that comes close is the varying spring pad thicknesses that are available, which depend upon the option levels (weight) of your car and the country in which it was delivered (road smoothness). The thickness of the pad is identified by the number of tabs of dots on it, the thinnest being one and the thickest being four. What exactly are you trying to accomplish?

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Robert Fini

'12 ML350 BlueTec, 111k
'06 E320CDI (x2)
'05 T1N Sprinter 2500/Pleasure-Way Plateau TS, 72k
'97 C36AMG, 325k (son's)
'94 E320T, 249k
'93 190E Sportline LE, 168k (daughter's)
'84 190E-2.3/5spd (Stage Rally Racer)
'66 230 W110 Sedan (Barn Find, Vintage Racer build in progress)