Great sovereignty and high comfort.
As is common practice, the Zetros is speed limited to 100 km/h, but
the gearing and my mechanical sympathy limited road speed to a maximum
of 90 km/h. At this speed, the engine was working at 2000 rpm, and,
while it would’ve done 100 km/h, I didn’t see the need to push any
harder. The Zetros handled very well on the road, however the lack of
weight on the 4×4 model made for a good demonstration of the stiffness
in the rear springs. The 6×6, with a heavy tray and 4.0-tonne of
concrete on the back, gave a much better ride, and, consequently, a
better demonstration of handling.
Eventually the time came to select off-road mode and push our way
through the trees. As we drove along the fire trails, there were a
couple of places where the tracks of smaller 4×4 vehicles came to an
abrupt end. One of these was a steep bank where it was clear someone
had made multiple attempts to get their 4×4 to the top, but never made
it. Both the 4×4 and 6×6 Zetros trucks simply walked over it like an
ant hill and powered on, giving a clear demonstration of just what
these trucks could do. This was one point where I was able to watch
the suspension on the 6×6 really working, and the flex in the chassis.
The flexibility in both components meant that all six wheels were
firmly on the ground, until the rear axle lifted off as the truck
levelled out at the top.
While most of the trails we covered didn’t seem to really test the
Zetros, certain sections demonstrated the benefits of different
aspects of their design. Ground clearance, approach angles and turning
circles were all highlighted over the course of the day, with me, for
one, left amazed at where these trucks went. What’s more amazing is
that they did this stuff with me at the wheel, in unfamiliar territory
and unfamiliar trucks, yet with great ease and comfort.