When we went over 4yrs ago,when we go of the boat at Tassie there was four 4wd's in or group, 2 landcruiser's and 2 nisssan's, both the nissan's had to gernie the wheel arches etc due top mud and grass seeds etc yet both landcruisers got through ok, mine was one of these and the undercarriage and wheel arches were full of the same mud etc.